Neurological Anatomy

Copyright Ted Nissen 2003

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1       HEAD & NECK. 1

1.1        OLFACTORY. 1

1.2        OPTIC. 2

1.3        OCULOMOTOR. 2

1.4        TROCHELEAR. 2

1.5        TRIGEMINAL. 2

1.6        ABDUCENS. 4

1.7        FACIAL. 4

1.8        ACOUSTIC. 5

1.9        GLOSSOPHARYNGEAL. 5

1.10       VAGUS. 5

1.11       SPINAL ACCESSORY. 7

1.12       HYPOGLOSSAL. 7

1.13       LESSOR OCCIPITAL. 8

1.14       GREATER AURICULAR. 8

1.15       TRANSVERSE (ANT) CUT. 9

1.16       SUPRACLAVICULAR. 10

1.17       SUPRASCAPULAR. 11

1.18       ANSA CERVICALIS(ANSA HYPOGLOSSI) 12

1.19       PHRENIC. 13

1.20       RECTUS CAPITIS LATERALIS N. 14

1.21       RECTUS CAPITIS ANTERIOR N. 15

1.22       LONGUS CAPITIS N. 16

1.23       LONGUS COLI N. 17

1.24       STERNOCLEIDOMASTOID N. 18

1.25       TRAPEZIUS N. 19

1.26       LEVATOR SCAPULAE N. 20

1.27       SCALENUS NERVES. 21

1.28       BRACHIAL PLEXUS. 22

1.29       DORSAL SCAPULAR N. 23

1.30       LONG THORACIC NERVE. 24

1.31       SUBCLAVIUS N. 25

1.32       UPPER SUBSCAPULAR N. 26

1.33       THORACODORSAL N. (MIDDLE SUBSCAPULAR N.) 27

1.34       LOWER SUBSCAPULAR N. 28

2       Arms. 29

2.1        SUPRACLAVICULAR. 29

2.2        AXILLARY(U LAT CUT N) 31

2.3        2ND THOR INTERCSL N. 32

2.4        MEDIAL BRACHIAL CUT N.(FLASH;MEDIAL CUT)(GRAY;LESSER INTERNAL CUT,N. OF WRISBERG) 33

2.5        RADIAL. 34

2.6        MUSCULOCUTANEOUS. 35

2.7        MED ANTEBRACHIAL CUT N.(FLASH;MEDIAL  CUTANEOUS N. OF FOREARM),(GRAY; INTERNAL CUT N.) 36

3       Hands. 37

3.1        ULNAR. 37

3.2        RADIAL. 38

3.3        MEDIAN N. 39

3.4. 40

3.5. 40

4       HIP AND LEGS. 40

4.1        12TH THORACIC INTERCOSTAL(SUB COSTAL) 35.01. 40

4.2        LUMBAR PLEXUS. 41

4.3        ILLIOHYPOGASTRIC. 42

4.4        ILLIO-INGUINAL. 43

4.5        GENITAL FEMORAL. 45

4.6        POSTERIOR FEMORAL CUTANEOUS. 46

4.7        OBTURATOR. 47

4.8        ACCESSORY OBTURATOR. 48

4.9        LAT FEM CUT. 49

4.10       FEMORAL NERVE. 50

4.11       QUADRATUS FEMORIS N. 53

4.12       OBTURATOR INTERNUS. 54

4.13       PIRIFORMIS. 55

4.14       SUPERIOR GLUTEAL. 55

4.15       INFERIOR GLUTEAL. 56

4.16       SACRAL PLEXUS L4-S3. 57

4.17       SCIATIC (TIBIAL/COMMON PERONEAL) 58

4.18       COMMON PERONAL(FIBULAR)(SCIATIC) 59

4.19       TIBIAL. 64

4.20       PERFORATING CUT. 68

4.21       4TH SACRAL NERVE(SACRAL MUSCULAR BRANCHES) 69

4.22       PUDENDAL N(INF RECTAL BR-INF HEMORRHOIDAL N.) 70

4.23. 71

5       TORSO. 72

5.1        LATERAL PECTORAL. 72

5.2        MEDIAL PECTORAL. 73

5.3        1ST THOR INTERCSTL N. 74

5.4        2ND THOR INTRCSTL N. 75

5.5        UPPER INTERCSTL=T3-6. 76

5.6        LWR INTCSTL N.=T7-11. 77

5.7        1ST DORSAL RAMUS(SUBOCCIPITAL N) 78

5.8        2ND DOR RAMUS(GREATER OCCIPITAL N) 78

5.9        3RD DORSAL RAMUS. 78

5.10       LOWR CER DOR RAM (C4-8) 78

5.11       UPP THOR DOR RAM (T1-6) 78

5.12       LOWR THOR DOR RAM (T7-12) 78

5.13       LUMBAR DOR RAM (L1-5) 79

5.14       UPPER SACRAL DOR RAM (S1-3) 80

5.15       LWR SAC&COC DR R(ANOCOCCYGEAL N) (S4,5,C01) 81

5.16. 86

5.17. 86

 

 

 

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1      HEAD & NECK

1.1   OLFACTORY

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1.1.1   DESCRIPTION # 1: PATH, FUNCTION

1.1.1.1       SMELL

1.1.2   ROOTS

1.1.2.1       CN 1

1.2    OPTIC

1.2.1   DESCRIPTION # 1: PATH, FUNCTION

1.2.1.1       VISION

1.2.2   ROOTS

1.2.2.1       CN 2

1.3   OCULOMOTOR

1.3.1   DESCRIPTION # 1: PATH, FUNCTION

1.3.1.1       EYE MOVEMENTS; MOVEMENT OF EYE BALL, EYELID, CONSTRICTION OF LENS FOR NEAR VISION

1.3.2   MUSCULAR BRANCHES(OCCULO)

1.3.2.1       SUPERIOR RECTUS

1.3.2.2       INFERIOR RECTUS

1.3.2.3       MEDIAL RECTUS

1.3.2.4       INFERIOR OBLIQUE

1.3.2.5       LEVATOR PALPEBRAE SUPERIORIS

1.3.3   ROOTS

1.3.3.1       CN 3

1.4   TROCHELEAR

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1.4.1   DESCRIPTION # 1: PATH, FUNCTION

1.4.1.1       EYE MOVEMENTS; EYE BALL MEVEMENT

1.4.2   MUSCULAR BRANCHES(TROCH)

1.4.2.1       SUPERIOR OBLIQUE

1.4.3   ROOTS

1.4.3.1       CN4

1.5   TRIGEMINAL

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1.5.1   DESCRIPTION # 1: PATH, FUNCTION

1.5.1.1       SENSATION TO FACE, CHEWING. SUPRFICIAL SEN=PONS VAROLII, DEEP SEN= LONG TRACT OF MEDULLA,LWR SEN=SUBSTANIA GELATINOSA ROLANDO, SEMILUNAR(GASSERIAN) GANGLION=LODGED IN AN OSTEO-FIBROUS SPACE THE CAVUM MECKELII NEAR THE APEX OF THE PETROUS PORTION OF THE TEMPORAL BONE.

1.5.2    Illustration

1.5.2.1       Reference Number

1.5.2.1.1   31.01

1.5.2.2       Illustration Link

1.5.2.2.1   Trigeminal

1.5.3   NEUROLOGICAL BRANCHES

1.5.3.1       OPHTHALMIC(TRI)

1.5.3.1.1    DESCRIPTION # 1: PATH, FUNCTION
1.5.3.1.1.1  PASSES FORWARD ALONG OUTER WALL OF CAVERNOUS SINUS AND JUST BEFORE ENTERING THE ORBIT THR T SPHENOIDAL FISSURE DIVIDES IN THRE BRANCHES LACHRYMAL, FRONTAL & NASAL. IT THEN PASSES THRU SUP ORBITAL FISSURE
1.5.3.1.2    DESCRIPTION # 2: CUTANEOUS AREA, ADDITIONAL COMMENTS
1.5.3.1.2.1  U EYELID,MUCOUS LINING OF THE EYE,SKIN OF EYEBROW,EYEBALL,LACRIMAL GL,NAS CAVITY, SIDE OF NOSE, FOREHEAD,A 1/2 OF SCLP.
1.5.3.1.3   NUMBER
1.5.3.1.3.1  31.01

1.5.3.2       MAXILLARY(TRI)

1.5.3.2.1    DESCRIPTION # 1: PATH, FUNCTION
1.5.3.2.1.1  FORAMEN ROTUNDUM
1.5.3.2.2    DESCRIPTION # 2: CUTANEOUS AREA, ADDITIONAL COMMENTS
1.5.3.2.2.1  MUCOSA OF NOSE,PALATE, PHARYNX, U TEETH,U LIPL EYELID.

1.5.3.3       MANDIBULAR(TRI)

1.5.3.3.1    DESCRIPTION # 1: PATH, FUNCTION
1.5.3.3.1.1  FORAMEN OVALE
1.5.3.3.2    DESCRIPTION # 2: CUTANEOUS AREA, ADDITIONAL COMMENTS
1.5.3.3.2.1  A 2/3 TOUGUE L TEETH, SKIN O MANDIBLE,CHECK & MUCOSA,SIDE O HEAD IN F OF EAR,

1.5.4   MUSCULAR BRANCHES(MANDIBULAR)

1.5.4.1       MASSETER

1.5.4.2       TEMPORALIS

1.5.4.3       MEDIAL PTERYGOID

1.5.4.4       LATERAL PTERYGOID

1.5.4.5       TENSOR VELI PALATINI

1.5.4.6       DIGASTRIC(ANTERIOR BELLY)

1.5.4.7       MYLOHYOID

1.5.5   ROOTS

1.5.5.1       CN 5

1.6   ABDUCENS

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1.6.1   DESCRIPTION # 1: PATH, FUNCTION

EYE MOVEMENTS; EYE BALL MEVEMENT

1.6.2   MUSCULAR BRANCHES(ABDUCENS)

1.6.2.1       LATERAL RECTUS

1.6.3   ROOTS

1.6.3.1       CN 6

1.7   FACIAL

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1.7.1   DESCRIPTION # 1: PATH, FUNCTION

FACIAL EXPRESSION, TASTE,SALIVA SECRETION, TEARS.

1.7.2   MUSCULAR BRANCHES(FACIAL)

1.7.2.1       FRONTALIS(EPICRANIUS 1)

1.7.2.2       OCCIPITALIS(EPICRANIUS 2)

1.7.2.3       ORBICULARIS ORIS

1.7.2.4       ZYGOMATICUS MAJOR

1.7.2.5       LEVATOR LABIL SUPERIORIS

1.7.2.6       DEPRESSOR LABII INFERIORIS

1.7.2.7       BUCCINATOR

1.7.2.8       MENTALIS

1.7.2.9       PLATYSMA

1.7.2.10   RISORIUS

1.7.2.11   ORBICULARIS OCULI

1.7.2.12   CORRUGATOR SUPERCILLI

1.7.2.13   STYLOHYOID

1.7.2.14   DIAGASTRIC(POSTERIOR BELLY)

1.7.2.15   STAPEDIUS

1.7.3   CUTANEOUS(FACIAL)

1.7.3.1       DESCRIPTION # 1: PATH, FUNCTION

TASTE IN ANTERIOR TWO-THIRDS OF TONGUE. SENSATION TO SOFT PALATE. INNERVATION OF SALIVARY GLANDS.

1.7.4   ROOTS

1.7.4.1       CN 7

1.8   ACOUSTIC

1.8.1   DESCRIPTION # 1: PATH, FUNCTION

HEARING, EQUILIBRIUM

1.8.2   ROOTS

1.8.2.1       CN 8

1.9   GLOSSOPHARYNGEAL

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1.9.1   DESCRIPTION # 1: PATH, FUNCTION

TASTE, SPEECH

1.9.2   MUSCULAR BRANCHES(GLOSSO)

1.9.2.1       STYLOPHARYNGEUS

1.9.3   CUTANEOUS(GLOSSO)

TASTE IN POSTERIOR 2/3 RDS OF TONGUE. SENSATION TO FAUCES, TONSILS, PHARYNX, AND SOFT PALATE.

1.9.4   ROOTS

1.9.4.1       CN 9

1.10 VAGUS

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1.10.1            DESCRIPTION # 1: PATH, FUNCTION

PARASYMPATHETIC, VISERAL MUSCLE MOVEMENT, SENSATION FROM ORGANS

1.10.2            CUTANEOUS(VAGUS)

SENSORY FIBERS TO SKIN IN BACK OF AURICLE, POSTERIOR PORTION OF EXTERNAL ACOUSTIC MEATUS, PHARYNX, LARYNX, THORACIC AND ABDOMINAL VISCERA.

1.10.3            RECURRENT LARYNGEAL(VAGUS)

1.10.3.1   MUSCULAR BRANCHES(RECURR LARG)

1.10.3.1.1             POSTERIOR CRICOARYTENOID
1.10.3.1.2             LATERAL CRICOARYTENOID
1.10.3.1.3             ARYTENOID
1.10.3.1.4             THYROARYTENOID

1.10.4            EXTERNAL LARYNGEAL(VAGUS)

1.10.4.1   MUSCULAR BRANCHES(EXTER LARG)

1.10.4.1.1             CRICOTHYROID

1.10.5            PHARYNGEAL BRANCH(VAGUS)

1.10.5.1   MUSCULAR BRANCHES(PHARYN)

1.10.5.1.1             INFERIOR CONSTRICTOR

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.2             MIDDLE CONSTRICTOR

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.3             SUPERIOR CONSTRICTOR

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.4             PALATOGLOSSUS

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.5             SALPINGOPHARYNGEUS

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.6             PALATOPHARYNGEUS

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.7             LEVATOR VELI PALATINI

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.8             MUSCULUS UVULAE

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.9             PALATOGLOSSUS

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.5.1.10         PALATOPHARYNGEUS

ADDITIONAL INNERVATION: WITH FILIMENTS FROM SPINAL ACCESSARY NERVE WHICH TRAVELS THRU PHARYNGEAL PLEXUS.

1.10.6            ROOTS

1.10.6.1   CN 10

1.11 SPINAL ACCESSORY

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1.11.1            DESCRIPTION # 1: PATH, FUNCTION

SWALLOWING, MOVEMENT OF HEAD

1.11.2            ROOTS

1.11.2.1    CN11

1.11.3            MUSCULAR BRANCHES(SPINL ACCES)

1.11.3.1   STERNOCLEIDOMASTOID

1.11.3.1.1             CARD= 21
1.11.3.1.2             INNERVATION
1.11.3.1.2.1                (XI(C1-5) MOTOR)

1.11.3.2   TRAPEZIUS

1.11.3.2.1             CARD= 22
1.11.3.2.2             INNERVATION
1.11.3.2.2.1                (XI(C1-5) MOTOR)

1.12 HYPOGLOSSAL

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1.12.1            DESCRIPTION # 1: PATH, FUNCTION

MOVEMENT OF TONGUE DURNING SPEECH AND SWALLOWING.

1.12.2            ROOTS

1.12.2.1   CN12

1.12.3            MUSCULAR BRANCHES(HYPO)

1.12.3.1   GENIOGLOSSUS

1.12.3.2   STYLOGLOSSUS

1.12.3.3   HYOGLOSSUS

1.12.3.4   STYLOHYOID

1.12.3.5   MYHLOHYOID

1.12.3.6   OMOHYOID(INFERIOR BELLY)

1.12.3.7   THYROHYOID(DECENDING HYPOGLOSSAL)

1.12.3.8   GENIOHYOID

1.12.3.9   INTRINSIC MUS OF TONGUE

1.13 LESSER OCCIPITAL

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1.13.1            DESCRIPTION # 1: PATH, FUNCTION-LESIONS

A FOCAL LESION WILL RESULT IN PARESTHESIA OR LACK OF SENSATION TO THE SKIN DESCRIBED IN THE CUTANEOUS SECTION OF THIS NERVE.

1.13.2            DESCRIPTION # 2: CUTANEOUS AREA, ADDITIONAL COMMENTS

MID NECK ALONG THE P BORDER OF SCM &PRT O MASTOID PRO A T SCALP BEH T LWAR & UPPER MEDIAN PRT O AURICLE.

1.13.3            ROOTS

1.13.3.1   C2-C3

1.13.3.2   SPINAL NERVE

1.13.3.3   VENTRAL

1.13.4            NUMBER

1.13.4.1   32.01

1.13.5            CARD

1.13.5.1   9

1.14 GREATER AURICULAR

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1.14.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.14.1.1   .

1.14.2            NUMBER

1.14.2.1   35

1.14.3            REFERENCE

1.14.3.1    

1.14.4            ROOTS

1.14.4.1    

1.14.4.2   Lumbar Plexus

1.14.4.3   VENTRAL

1.14.5            DIVISION

1.14.5.1   Dorsal Ventral

1.14.5.2    

1.14.6            CUTANEOUS BRANCHES

1.14.6.1    

1.14.6.1.1              

1.14.6.2    

1.14.6.2.1             .

1.14.7            ARTICULAR BRANCHES

1.14.7.1    

1.14.7.1.1              

1.14.8            MUSCULAR BRANCHES

1.14.8.1    

1.14.8.2    

1.14.8.3    

1.14.8.4    

1.14.8.5    

1.14.8.6    

1.15 TRANSVERSE (ANT) CUT

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1.15.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.15.1.1   .

1.15.2            NUMBER

1.15.2.1   35

1.15.3            REFERENCE

1.15.3.1    

1.15.4            ROOTS

1.15.4.1    

1.15.4.2   Lumbar Plexus

1.15.4.3   VENTRAL

1.15.5            DIVISION

1.15.5.1   Dorsal Ventral

1.15.5.2    

1.15.6            CUTANEOUS BRANCHES

1.15.6.1    

1.15.6.1.1              

1.15.6.2    

1.15.6.2.1             .

1.15.7            ARTICULAR BRANCHES

1.15.7.1    

1.15.7.1.1              

1.15.8            MUSCULAR BRANCHES

1.15.8.1    

1.15.8.2    

1.15.8.3    

1.15.8.4    

1.15.8.5    

1.15.8.6    

1.16 SUPRACLAVICULAR

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1.16.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.16.1.1   .

1.16.2            NUMBER

1.16.2.1   35

1.16.3            REFERENCE

1.16.3.1    

1.16.4            ROOTS

1.16.4.1    

1.16.4.2   Lumbar Plexus

1.16.4.3   VENTRAL

1.16.5            DIVISION

1.16.5.1   Dorsal Ventral

1.16.5.2    

1.16.6            CUTANEOUS BRANCHES

1.16.6.1    

1.16.6.1.1              

1.16.6.2    

1.16.6.2.1             .

1.16.7            ARTICULAR BRANCHES

1.16.7.1    

1.16.7.1.1              

1.16.8            MUSCULAR BRANCHES

1.16.8.1    

1.16.8.2    

1.16.8.3    

1.16.8.4    

1.16.8.5    

1.16.8.6    

1.17 SUPRASCAPULAR

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1.17.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.17.1.1   .

1.17.2            NUMBER

1.17.2.1   35

1.17.3            REFERENCE

1.17.3.1    

1.17.4            ROOTS

1.17.4.1    

1.17.4.2   Lumbar Plexus

1.17.4.3   VENTRAL

1.17.5            DIVISION

1.17.5.1   Dorsal Ventral

1.17.5.2    

1.17.6            CUTANEOUS BRANCHES

1.17.6.1    

1.17.6.1.1              

1.17.6.2    

1.17.6.2.1             .

1.17.7            ARTICULAR BRANCHES

1.17.7.1    

1.17.7.1.1              

1.17.8            MUSCULAR BRANCHES

1.17.8.1    

1.17.8.2    

1.17.8.3    

1.17.8.4    

1.17.8.5    

1.17.8.6    

1.18 ANSA CERVICALIS (ANSA HYPOGLOSSI)

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1.18.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.18.1.1   .

1.18.2            NUMBER

1.18.2.1   35

1.18.3            REFERENCE

1.18.3.1    

1.18.4            ROOTS

1.18.4.1    

1.18.4.2   Lumbar Plexus

1.18.4.3   VENTRAL

1.18.5            DIVISION

1.18.5.1   Dorsal Ventral

1.18.5.2    

1.18.6            CUTANEOUS BRANCHES

1.18.6.1    

1.18.6.1.1              

1.18.6.2    

1.18.6.2.1             .

1.18.7            ARTICULAR BRANCHES

1.18.7.1    

1.18.7.1.1              

1.18.8            MUSCULAR BRANCHES

1.18.8.1    

1.18.8.2    

1.18.8.3    

1.18.8.4    

1.18.8.5    

1.18.8.6    

1.19 PHRENIC

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1.19.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.19.1.1   .

1.19.2            NUMBER

1.19.2.1   35

1.19.3            REFERENCE

1.19.3.1    

1.19.4            ROOTS

1.19.4.1    

1.19.4.2   Lumbar Plexus

1.19.4.3   VENTRAL

1.19.5            DIVISION

1.19.5.1   Dorsal Ventral

1.19.5.2    

1.19.6            CUTANEOUS BRANCHES

1.19.6.1    

1.19.6.1.1              

1.19.6.2    

1.19.6.2.1             .

1.19.7            ARTICULAR BRANCHES

1.19.7.1    

1.19.7.1.1              

1.19.8            MUSCULAR BRANCHES

1.19.8.1    

1.19.8.2    

1.19.8.3    

1.19.8.4    

1.19.8.5    

1.19.8.6    

1.20 RECTUS CAPITIS LATERALIS N.

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1.20.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.20.1.1   .

1.20.2            NUMBER

1.20.2.1   35

1.20.3            REFERENCE

1.20.3.1    

1.20.4            ROOTS

1.20.4.1    

1.20.4.2   Lumbar Plexus

1.20.4.3   VENTRAL

1.20.5            DIVISION

1.20.5.1   Dorsal Ventral

1.20.5.2    

1.20.6            CUTANEOUS BRANCHES

1.20.6.1    

1.20.6.1.1              

1.20.6.2    

1.20.6.2.1             .

1.20.7            ARTICULAR BRANCHES

1.20.7.1    

1.20.7.1.1              

1.20.8            MUSCULAR BRANCHES

1.20.8.1    

1.20.8.2    

1.20.8.3    

1.20.8.4    

1.20.8.5    

1.20.8.6    

1.21 RECTUS CAPITIS ANTERIOR N.

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1.21.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.21.1.1   .

1.21.2            NUMBER

1.21.2.1   35

1.21.3            REFERENCE

1.21.3.1    

1.21.4            ROOTS

1.21.4.1    

1.21.4.2   Lumbar Plexus

1.21.4.3   VENTRAL

1.21.5            DIVISION

1.21.5.1   Dorsal Ventral

1.21.5.2    

1.21.6            CUTANEOUS BRANCHES

1.21.6.1    

1.21.6.1.1              

1.21.6.2    

1.21.6.2.1             .

1.21.7            ARTICULAR BRANCHES

1.21.7.1    

1.21.7.1.1              

1.21.8            MUSCULAR BRANCHES

1.21.8.1    

1.21.8.2    

1.21.8.3    

1.21.8.4    

1.21.8.5    

1.21.8.6    

1.22 LONGUS CAPITIS N

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1.22.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.22.1.1   .

1.22.2            NUMBER

1.22.2.1   35

1.22.3            REFERENCE

1.22.3.1    

1.22.4            ROOTS

1.22.4.1    

1.22.4.2   Lumbar Plexus

1.22.4.3   VENTRAL

1.22.5            DIVISION

1.22.5.1   Dorsal Ventral

1.22.5.2    

1.22.6            CUTANEOUS BRANCHES

1.22.6.1    

1.22.6.1.1              

1.22.6.2    

1.22.6.2.1             .

1.22.7            ARTICULAR BRANCHES

1.22.7.1    

1.22.7.1.1              

1.22.8            MUSCULAR BRANCHES

1.22.8.1    

1.22.8.2    

1.22.8.3    

1.22.8.4    

1.22.8.5    

1.22.8.6    

1.23 LONGUS COLI N.

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1.23.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.23.1.1   .

1.23.2            NUMBER

1.23.2.1   35

1.23.3            REFERENCE

1.23.3.1    

1.23.4            ROOTS

1.23.4.1    

1.23.4.2   Lumbar Plexus

1.23.4.3   VENTRAL

1.23.5            DIVISION

1.23.5.1   Dorsal Ventral

1.23.5.2    

1.23.6            CUTANEOUS BRANCHES

1.23.6.1    

1.23.6.1.1              

1.23.6.2    

1.23.6.2.1             .

1.23.7            ARTICULAR BRANCHES

1.23.7.1    

1.23.7.1.1              

1.23.8            MUSCULAR BRANCHES

1.23.8.1    

1.23.8.2    

1.23.8.3    

1.23.8.4    

1.23.8.5    

1.23.8.6    

1.24 STERNOCLEIDOMASTOID N.

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1.24.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.24.1.1   .

1.24.2            NUMBER

1.24.2.1   35

1.24.3            REFERENCE

1.24.3.1    

1.24.4            ROOTS

1.24.4.1    

1.24.4.2   Lumbar Plexus

1.24.4.3   VENTRAL

1.24.5            DIVISION

1.24.5.1   Dorsal Ventral

1.24.5.2    

1.24.6            CUTANEOUS BRANCHES

1.24.6.1    

1.24.6.1.1              

1.24.6.2    

1.24.6.2.1             .

1.24.7            ARTICULAR BRANCHES

1.24.7.1    

1.24.7.1.1              

1.24.8            MUSCULAR BRANCHES

1.24.8.1    

1.24.8.2    

1.24.8.3    

1.24.8.4    

1.24.8.5    

1.24.8.6    

1.25 TRAPEZIUS N.

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1.25.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.25.1.1   .

1.25.2            NUMBER

1.25.2.1   35

1.25.3            REFERENCE

1.25.3.1    

1.25.4            ROOTS

1.25.4.1    

1.25.4.2   Lumbar Plexus

1.25.4.3   VENTRAL

1.25.5            DIVISION

1.25.5.1   Dorsal Ventral

1.25.5.2    

1.25.6            CUTANEOUS BRANCHES

1.25.6.1    

1.25.6.1.1              

1.25.6.2    

1.25.6.2.1             .

1.25.7            ARTICULAR BRANCHES

1.25.7.1    

1.25.7.1.1              

1.25.8            MUSCULAR BRANCHES

1.25.8.1    

1.25.8.2    

1.25.8.3    

1.25.8.4    

1.25.8.5    

1.25.8.6    

1.26 LEVATOR SCAPULAE N.

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1.26.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.26.1.1   .

1.26.2            NUMBER

1.26.2.1   35

1.26.3            REFERENCE

1.26.3.1    

1.26.4            ROOTS

1.26.4.1    

1.26.4.2   Lumbar Plexus

1.26.4.3   VENTRAL

1.26.5            DIVISION

1.26.5.1   Dorsal Ventral

1.26.5.2    

1.26.6            CUTANEOUS BRANCHES

1.26.6.1    

1.26.6.1.1              

1.26.6.2    

1.26.6.2.1             .

1.26.7            ARTICULAR BRANCHES

1.26.7.1    

1.26.7.1.1              

1.26.8            MUSCULAR BRANCHES

1.26.8.1    

1.26.8.2    

1.26.8.3    

1.26.8.4    

1.26.8.5    

1.26.8.6    

1.27 SCALENUS NERVES.

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1.27.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.27.1.1   .

1.27.2            NUMBER

1.27.2.1   35

1.27.3            REFERENCE

1.27.3.1    

1.27.4            ROOTS

1.27.4.1    

1.27.4.2   Lumbar Plexus

1.27.4.3   VENTRAL

1.27.5            DIVISION

1.27.5.1   Dorsal Ventral

1.27.5.2    

1.27.6            CUTANEOUS BRANCHES

1.27.6.1    

1.27.6.1.1              

1.27.6.2    

1.27.6.2.1             .

1.27.7            ARTICULAR BRANCHES

1.27.7.1    

1.27.7.1.1              

1.27.8            MUSCULAR BRANCHES

1.27.8.1    

1.27.8.2    

1.27.8.3    

1.27.8.4    

1.27.8.5    

1.27.8.6    

1.28 BRACHIAL PLEXUS

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1.28.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.28.1.1   .

1.28.2            NUMBER

1.28.2.1   35

1.28.3            REFERENCE

1.28.3.1    

1.28.4            ROOTS

1.28.4.1    

1.28.4.2   Lumbar Plexus

1.28.4.3   VENTRAL

1.28.5            DIVISION

1.28.5.1   Dorsal Ventral

1.28.5.2    

1.28.6            CUTANEOUS BRANCHES

1.28.6.1    

1.28.6.1.1              

1.28.6.2    

1.28.6.2.1             .

1.28.7            ARTICULAR BRANCHES

1.28.7.1    

1.28.7.1.1              

1.28.8            MUSCULAR BRANCHES

1.28.8.1    

1.28.8.2    

1.28.8.3    

1.28.8.4    

1.28.8.5    

1.28.8.6    

1.29 DORSAL SCAPULAR N.

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1.29.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.29.1.1   .

1.29.2            NUMBER

1.29.2.1   35

1.29.3            REFERENCE

1.29.3.1    

1.29.4            ROOTS

1.29.4.1    

1.29.4.2   Lumbar Plexus

1.29.4.3   VENTRAL

1.29.5            DIVISION

1.29.5.1   Dorsal Ventral

1.29.5.2    

1.29.6            CUTANEOUS BRANCHES

1.29.6.1    

1.29.6.1.1              

1.29.6.2    

1.29.6.2.1             .

1.29.7            ARTICULAR BRANCHES

1.29.7.1    

1.29.7.1.1              

1.29.8            MUSCULAR BRANCHES

1.29.8.1    

1.29.8.2    

1.29.8.3    

1.29.8.4    

1.29.8.5    

1.29.8.6    

1.30 LONG THORACIC NERVE

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1.30.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.30.1.1   .

1.30.2            NUMBER

1.30.2.1   35

1.30.3            REFERENCE

1.30.3.1    

1.30.4            ROOTS

1.30.4.1    

1.30.4.2   Lumbar Plexus

1.30.4.3   VENTRAL

1.30.5            DIVISION

1.30.5.1   Dorsal Ventral

1.30.5.2    

1.30.6            CUTANEOUS BRANCHES

1.30.6.1    

1.30.6.1.1              

1.30.6.2    

1.30.6.2.1             .

1.30.7            ARTICULAR BRANCHES

1.30.7.1    

1.30.7.1.1              

1.30.8            MUSCULAR BRANCHES

1.30.8.1    

1.30.8.2    

1.30.8.3    

1.30.8.4    

1.30.8.5    

1.30.8.6    

1.31 SUBCLAVIUS N.

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1.31.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.31.1.1   .

1.31.2            NUMBER

1.31.2.1   35

1.31.3            REFERENCE

1.31.3.1    

1.31.4            ROOTS

1.31.4.1    

1.31.4.2   Lumbar Plexus

1.31.4.3   VENTRAL

1.31.5            DIVISION

1.31.5.1   Dorsal Ventral

1.31.5.2    

1.31.6            CUTANEOUS BRANCHES

1.31.6.1    

1.31.6.1.1              

1.31.6.2    

1.31.6.2.1             .

1.31.7            ARTICULAR BRANCHES

1.31.7.1    

1.31.7.1.1              

1.31.8            MUSCULAR BRANCHES

1.31.8.1    

1.31.8.2    

1.31.8.3    

1.31.8.4    

1.31.8.5    

1.31.8.6    

1.32 UPPER SUBSCAPULAR N.

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1.32.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.32.1.1   .

1.32.2            NUMBER

1.32.2.1   35

1.32.3            REFERENCE

1.32.3.1    

1.32.4            ROOTS

1.32.4.1    

1.32.4.2   Lumbar Plexus

1.32.4.3   VENTRAL

1.32.5            DIVISION

1.32.5.1   Dorsal Ventral

1.32.5.2    

1.32.6            CUTANEOUS BRANCHES

1.32.6.1    

1.32.6.1.1              

1.32.6.2    

1.32.6.2.1             .

1.32.7            ARTICULAR BRANCHES

1.32.7.1    

1.32.7.1.1              

1.32.8            MUSCULAR BRANCHES

1.32.8.1    

1.32.8.2    

1.32.8.3    

1.32.8.4    

1.32.8.5    

1.32.8.6    

1.33 THORACODORSAL N. (MIDDLE SUBSCAPULAR N.)

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1.33.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.33.1.1   .

1.33.2            NUMBER

1.33.2.1   35

1.33.3            REFERENCE

1.33.3.1    

1.33.4            ROOTS

1.33.4.1    

1.33.4.2   Lumbar Plexus

1.33.4.3   VENTRAL

1.33.5            DIVISION

1.33.5.1   Dorsal Ventral

1.33.5.2    

1.33.6            CUTANEOUS BRANCHES

1.33.6.1    

1.33.6.1.1              

1.33.6.2    

1.33.6.2.1             .

1.33.7            ARTICULAR BRANCHES

1.33.7.1    

1.33.7.1.1              

1.33.8            MUSCULAR BRANCHES

1.33.8.1    

1.33.8.2    

1.33.8.3    

1.33.8.4    

1.33.8.5    

1.33.8.6    

1.34 LOWER SUBSCAPULAR N.

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1.34.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

1.34.1.1   .

1.34.2            NUMBER

1.34.2.1   35

1.34.3            REFERENCE

1.34.3.1    

1.34.4            ROOTS

1.34.4.1    

1.34.4.2   Lumbar Plexus

1.34.4.3   VENTRAL

1.34.5            DIVISION

1.34.5.1   Dorsal Ventral

1.34.5.2    

1.34.6            CUTANEOUS BRANCHES

1.34.6.1    

1.34.6.1.1              

1.34.6.2    

1.34.6.2.1             .

1.34.7            ARTICULAR BRANCHES

1.34.7.1    

1.34.7.1.1              

1.34.8            MUSCULAR BRANCHES

1.34.8.1    

1.34.8.2    

1.34.8.3    

1.34.8.4    

1.34.8.5    

1.34.8.6    

2      Arms

2.1   SUPRACLAVICULAR

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2.1.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.1.1.1       .

2.1.2   NUMBER

2.1.2.1       35

2.1.3   REFERENCE

2.1.3.1        

2.1.4   ROOTS

2.1.4.1        

2.1.4.2       Lumbar Plexus

2.1.4.3       VENTRAL

2.1.5   DIVISION

2.1.5.1       Dorsal Ventral

2.1.5.2        

2.1.6   CUTANEOUS BRANCHES

2.1.6.1        

2.1.6.1.1    

2.1.6.2        

2.1.6.2.1   .

2.1.7   ARTICULAR BRANCHES

2.1.7.1        

2.1.7.1.1    

2.1.8   MUSCULAR BRANCHES

2.1.8.1        

2.1.8.2        

2.1.8.3        

2.1.8.4        

2.1.8.5        

2.1.8.6        

2.2   AXILLARY (U LAT CUT N)

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2.2.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.2.1.1       .

2.2.2   NUMBER

2.2.2.1       35

2.2.3   REFERENCE

2.2.3.1        

2.2.4   ROOTS

2.2.4.1        

2.2.4.2       Lumbar Plexus

2.2.4.3       VENTRAL

2.2.5   DIVISION

2.2.5.1       Dorsal Ventral

2.2.5.2        

2.2.6   CUTANEOUS BRANCHES

2.2.6.1        

2.2.6.1.1    

2.2.6.2        

2.2.6.2.1   .

2.2.7   ARTICULAR BRANCHES

2.2.7.1        

2.2.7.1.1    

2.2.8   MUSCULAR BRANCHES

2.2.8.1        

2.2.8.2        

2.2.8.3        

2.2.8.4        

2.2.8.5        

2.2.8.6        

2.3   2ND THOR INTERCSL N

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2.3.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.3.1.1       .

2.3.2   NUMBER

2.3.2.1       35

2.3.3   REFERENCE

2.3.3.1        

2.3.4   ROOTS

2.3.4.1        

2.3.4.2       Lumbar Plexus

2.3.4.3       VENTRAL

2.3.5   DIVISION

2.3.5.1       Dorsal Ventral

2.3.5.2        

2.3.6   CUTANEOUS BRANCHES

2.3.6.1        

2.3.6.1.1    

2.3.6.2        

2.3.6.2.1   .

2.3.7   ARTICULAR BRANCHES

2.3.7.1        

2.3.7.1.1    

2.3.8   MUSCULAR BRANCHES

2.3.8.1        

2.3.8.2        

2.3.8.3        

2.3.8.4        

2.3.8.5        

2.3.8.6        

2.4   MEDIAL BRACHIAL CUT N.(FLASH;MEDIAL CUT)(GRAY;LESSER INTERNAL CUT,N. OF WRISBERG)

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2.4.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.4.1.1       .

2.4.2   NUMBER

2.4.2.1       35

2.4.3   REFERENCE

2.4.3.1        

2.4.4   ROOTS

2.4.4.1        

2.4.4.2       Lumbar Plexus

2.4.4.3       VENTRAL

2.4.5   DIVISION

2.4.5.1       Dorsal Ventral

2.4.5.2        

2.4.6   CUTANEOUS BRANCHES

2.4.6.1        

2.4.6.1.1    

2.4.6.2        

2.4.6.2.1   .

2.4.7   ARTICULAR BRANCHES

2.4.7.1        

2.4.7.1.1    

2.4.8   MUSCULAR BRANCHES

2.4.8.1        

2.4.8.2        

2.4.8.3        

2.4.8.4        

2.4.8.5        

2.4.8.6        

2.5   RADIAL

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2.5.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.5.1.1       .

2.5.2   NUMBER

2.5.2.1       35

2.5.3   REFERENCE

2.5.3.1        

2.5.4   ROOTS

2.5.4.1        

2.5.4.2       Lumbar Plexus

2.5.4.3       VENTRAL

2.5.5   DIVISION

2.5.5.1       Dorsal Ventral

2.5.5.2        

2.5.6   CUTANEOUS BRANCHES

2.5.6.1        

2.5.6.1.1    

2.5.6.2        

2.5.6.2.1   .

2.5.7   ARTICULAR BRANCHES

2.5.7.1        

2.5.7.1.1    

2.5.8   MUSCULAR BRANCHES

2.5.8.1        

2.5.8.2        

2.5.8.3        

2.5.8.4        

2.5.8.5        

2.5.8.6        

2.6   MUSCULOCUTANEOUS

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2.6.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.6.1.1       .

2.6.2   NUMBER

2.6.2.1       35

2.6.3   REFERENCE

2.6.3.1        

2.6.4   ROOTS

2.6.4.1        

2.6.4.2       Lumbar Plexus

2.6.4.3       VENTRAL

2.6.5   DIVISION

2.6.5.1       Dorsal Ventral

2.6.5.2        

2.6.6   CUTANEOUS BRANCHES

2.6.6.1        

2.6.6.1.1    

2.6.6.2        

2.6.6.2.1   .

2.6.7   ARTICULAR BRANCHES

2.6.7.1        

2.6.7.1.1    

2.6.8   MUSCULAR BRANCHES

2.6.8.1        

2.6.8.2        

2.6.8.3        

2.6.8.4        

2.6.8.5        

2.6.8.6        

2.7   MED ANTEBRACHIAL CUT N.(FLASH;MEDIAL  CUTANEOUS N. OF FOREARM),(GRAY; INTERNAL CUT N.)

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2.7.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

2.7.1.1       .

2.7.2   NUMBER

2.7.2.1       35

2.7.3   REFERENCE

2.7.3.1        

2.7.4   ROOTS

2.7.4.1        

2.7.4.2       Lumbar Plexus

2.7.4.3       VENTRAL

2.7.5   DIVISION

2.7.5.1       Dorsal Ventral

2.7.5.2        

2.7.6   CUTANEOUS BRANCHES

2.7.6.1        

2.7.6.1.1    

2.7.6.2        

2.7.6.2.1   .

2.7.7   ARTICULAR BRANCHES

2.7.7.1        

2.7.7.1.1    

2.7.8   MUSCULAR BRANCHES

2.7.8.1        

2.7.8.2        

2.7.8.3        

2.7.8.4        

2.7.8.5        

2.7.8.6        

3      Hands

3.1   ULNAR

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3.1.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

3.1.1.1       .

3.1.2   NUMBER

3.1.2.1       35

3.1.3   REFERENCE

3.1.3.1        

3.1.4   ROOTS

3.1.4.1        

3.1.4.2       Lumbar Plexus

3.1.4.3       VENTRAL

3.1.5   DIVISION

3.1.5.1       Dorsal Ventral

3.1.5.2        

3.1.6   CUTANEOUS BRANCHES

3.1.6.1        

3.1.6.1.1    

3.1.6.2        

3.1.6.2.1   .

3.1.7   ARTICULAR BRANCHES

3.1.7.1        

3.1.7.1.1    

3.1.8   MUSCULAR BRANCHES

3.1.8.1        

3.1.8.2        

3.1.8.3        

3.1.8.4        

3.1.8.5        

3.1.8.6        

3.2   RADIAL

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3.2.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

3.2.1.1       .

3.2.2   NUMBER

3.2.2.1       35

3.2.3   REFERENCE

3.2.3.1        

3.2.4   ROOTS

3.2.4.1        

3.2.4.2       Lumbar Plexus

3.2.4.3       VENTRAL

3.2.5   DIVISION

3.2.5.1       Dorsal Ventral

3.2.5.2        

3.2.6   CUTANEOUS BRANCHES

3.2.6.1        

3.2.6.1.1    

3.2.6.2        

3.2.6.2.1   .

3.2.7   ARTICULAR BRANCHES

3.2.7.1        

3.2.7.1.1    

3.2.8   MUSCULAR BRANCHES

3.2.8.1        

3.2.8.2        

3.2.8.3        

3.2.8.4        

3.2.8.5        

3.2.8.6        

3.3   MEDIAN NERVE

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3.3.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

3.3.1.1       .

3.3.2   NUMBER

3.3.2.1       35

3.3.3   REFERENCE

3.3.3.1        

3.3.4   ROOTS

3.3.4.1        

3.3.4.2       Lumbar Plexus

3.3.4.3       VENTRAL

3.3.5   DIVISION

3.3.5.1       Dorsal Ventral

3.3.5.2        

3.3.6   CUTANEOUS BRANCHES

3.3.6.1        

3.3.6.1.1    

3.3.6.2        

3.3.6.2.1   .

3.3.7   ARTICULAR BRANCHES

3.3.7.1        

3.3.7.1.1    

3.3.8   MUSCULAR BRANCHES

3.3.8.1        

3.3.8.2        

3.3.8.3        

3.3.8.4        

3.3.8.5        

3.3.8.6        

3.4    

3.5    

4      HIP AND LEGS

4.1   12TH THORACIC INTERCOSTAL (SUB COSTAL) 35.01

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4.1.1   DESCRIPTION # 1: PATH, FUNCTION-LESIONS

4.1.1.1       A FOCAL LESION TO THE SUBCOSTAL NERVE WOULD NOT SIGNIFICANTLY WEAKEN THE QUADRATUS LUMBORUM BUT WOULD PARALYZE THE PYRAMIDALIS AND WEAKEN THE LOWER ABDOMINAL MUSCLES PRESENTING "BEAVOR'S SIGN". THIS COULD ALSO PRESENT A BULGING OF THE LOWER ABDOMEN.

4.1.2   DESCRIPTION # 2: CUTANEOUS AREA, ADDITIONAL COMMENTS

4.1.2.1       T12 IS OFTEN CONSIDERED PART OF THE LUMBAR PLEXUS.

4.1.3   CUTANEOUS BRANCHES (12TH THOR)

4.1.3.1       LATERAL CUTANEOUS (CUT B) 35.011

4.1.3.1.1   ANTEROLATERAL GLUTEAL SKIN SOME FILAMENTS REACHING THE SKIN OVER THE GREATER TROCHANTER

4.1.3.2       ANTERIOR CUTANEOUS(CUT BR) 35.012

4.1.3.2.1   SKIN OF SUPRAPUBIC AREA.

4.1.4   Articular Branches

4.1.4.1       ARTICULAR(12 THOR)

4.1.4.1.1   12TH COSTOVERTEBRAL(ART)

4.1.5   ROOTS

4.1.5.1       T12

4.1.5.2       SPINAL NERVE

4.1.5.3       VENTRAL

4.1.6   MUSCULAR BRANCHES (12TH THORACIC)

4.1.6.1       QUADRATUS LUMBORUM  T12-L3,(L4)

4.1.6.2       TRANSVERSE ABDOMINAL T7-L1

4.1.6.3       INTERNAL OBLIQUE ABDOMINAL T7-L1

4.1.6.4       EXTERNAL OBLIQUE ABDOMINAL T5-T12

4.1.6.4.1   T12 LATERAL CUTANEOUS BRANCH SUPPLIES THE LOWER SLIP

4.1.6.5       RECTUS ABDOMINAL (T5),T6-T12

4.1.6.6       PYRAMIDALIS T12

4.1.7   NUMBER

4.1.7.1       35.01

4.1.8   REFERANCE

4.1.8.1       50

4.2   LUMBAR PLEXUS

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4.2.1   DESCRIPTION # 1: PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.2.1.1       . LUMBAR PLEXUS: INJURY TO THE LUMBAR ROOTS OR THE CAUDA EQUINAL RELATED TO L1,L2,L3 CAN RESULT FROM NEUROFIBROMAS, MENINGIOMAS OR OTHER MALIGNANT DISEASE. DISC HERNIATIONS, ALTHOUGH LESS COMMON, CAN PRODUCE FOCAL LESIONS OF THE LUMBAR ROOTS. INJURY TO L1: RESULTS IN WEKNESS OF ABDOMINAL MUSCULATURE AND PARESTHESIAS TO THE SKIN REGION OF THE GREATER TROCHANTER AND UPPER GROIN. INJURY TO L2: PRODUCES WEAK HIP FLEXION, DUE TO DEFICITS IN PSOAS MAJOR AND ILIACUS, AND PARESTHESIAS TO SKIN OF ANTERIOR THIGH. INJURY TO L3: RESULTS IN WEAK ADDUCTION OF LEG AND REDUCED KNEE JERK REFLEX AND PARESTHESIAS TO SKIN OF ANTERIOR THIGH(FEMORAL ENRVE), ANTEROMEDIAL KNEE LEG AND FOOT (SAPHENOUS NERVE). INJURY TO L4: IS THE MOST COMMON LESION OF THE LUMBAR PLEXUS AND TYPICALLY RESULTS FROM A HERNIATED INTERVERTEBRAL DISC BETWEEN L4 AND L5 OR DEGENERATIVE ARTHRITIS (SPONDYLOSIS) IN THE SPINE. DEFICITS RESEMBLE THOSE OF L3 EXCEPT THAT CUTANEOUS FIBERS FOR THE ANTERIOR THIGH (VIA THE FEMORAL NERVE) SURVIVE. DEFICITS TO TIBIALIS ANTERIOR AND POSTERIOR WILL RESULT IN "FOOT DROP" VIA L4 LUMBOSACRAL TRUNK DEFICIT.

4.2.1.2       The lumbar plexus is formed by the loops of communication between the anterior divisions of the first three and the greater part of the fourth lumbar nerves; the first lumbar often receives a branch from the last thoracic nerve. It is situated in the posterior part of the Psoas major, in front of the transverse processes of the lumbar vertebræ. The mode in which the plexus is arranged varies in different subjects. It differs from the brachial plexus in not forming an intricate interlacement, but the several nerves of distribution arise from one or more of the spinal nerves, in the following manner: the first lumbar nerve, frequently supplemented by a twig from the last thoracic, splits into an upper and lower branch; the upper and larger branch divides into the iliohypogastric and ilioinguinal nerves; the lower and smaller branch unites with a branch of the second lumbar to form the genitofemoral nerve. The remainder of the second nerve, and the third and fourth nerves, divide into ventral and dorsal divisions. The ventral division of the second unites with the ventral divisions of the third and fourth nerves to form the obturator nerve. The dorsal divisions of the second and third nerves divide into two branches, a smaller branch from each uniting to form the lateral femoral cutaneous nerve, and a larger branch from each joining with the dorsal division of the fourth nerve to form the femoral nerve. The accessory obturator, when it exists, is formed by the union of two small branches given off from the third and fourth nerves.

The branches of the lumbar plexus may therefore be arranged as follows:

   6

Iliohypogastric

1 L.

Ilioinguinal

1 L.

Genitofemoral

1, 2 L.

 

Dorsal divisions.

Lateral femoral cutaneous

2, 3 L.

Femoral

2, 3, 4 L.

 

Ventral divisions.

Obturator

2, 3, 4 L.

Accessory obturator

3, 4 L.

 

4.2.1.3        

4.2.2   ROOTS

4.2.2.1       T12-L4

4.2.2.2       Lumbar Plexus

4.2.2.3       VENTRAL

4.2.3   REFERENCE

4.2.3.1       62

4.3   ILLIOHYPOGASTRIC

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4.3.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.3.1.1       . EXITS THROUGH THE LATERAL BORDER OF THE PSOAS MAJOR. INJURY TO THIS NERVE CAN RESULT FROM AN INCISION FOR AN APPENDECTOMY. PRESENTS AS A WEAKNESS IN THE ABDOMINAL AREA OF INQUINAL CANL AND PARESTHESIA OF LOSS OF SENSATION TO THE SKIN DESCRIBED IN THE CUTANEOUS SECTION FOR THIS NERVE. THE ABDONIMAL WEKNESS MAY RESULT IN THE DEVELOPMENT OF A DIRECT INQUINAL HERNIA.

4.3.2   CUTANEOUS BRANCHES

4.3.2.1       LATERAL CUTANEOUS

4.3.2.1.1    L GLUTEAL SKIN

4.3.2.2       ANTERIOR CUTANEOUS

4.3.2.2.1   . SUPRAPUBIC SKIN (HYPOGASTRIC REGION)

4.3.3   ARTICULAR BRANCHES

4.3.3.1       NONE

4.3.3.1.1    

4.3.4   ROOTS

4.3.4.1       T12-L1

4.3.4.2       Lumbar Plexus

4.3.4.3       VENTRAL

4.3.5   MUSCULAR BRANCHES

4.3.5.1       TRANSVERSE ABDOMINIS

4.3.5.1.1   SUPPLIED BY THE VENTRAL RAMI T7-T12 AND THE ILLIOINGUINAL NERVES.

4.3.5.2       INTERNAL ABDOMINAL OBLIQUE

4.3.5.2.1   SUPPLIED BY THE VENTRAL RAMI T7-T12 AND THE ILLIOINGUINAL NERVES.

4.3.6   NUMBER

4.3.6.1       . 35 .02

4.3.7   REFERENCE

4.3.7.1       66

4.4   ILLIO-INGUINAL

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4.4.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.4.1.1       . EXITS THROUGH THE LATERAL BORDER OF THE PSOAS MAJOR. INJURY TO THIS NERVE CAN RESULT BY AN INCISION FOR AN APPENDECTOMY AND HERNIORRHAPHIES, DURNING PLANNENSTIEL'S (HORIZONTAL SUPRAPUBIC) INCISIONS, OR NEPHRECTOMIES. SOMETIMES NORMAL PREGNACY AND DELIVERY CAN STRETCH THE NERVE. THE PATIENT USUALLY COMPLAINS OF PARESTHESIA OR LOSS OF S4ENSATION TO THE SKIN DECRIBED IN THE CUTANEOUS XERCTION FOR THIS NERVE. LIOHYPOGASTRIC, ILIO-INGUINAL AND GENITOFEMORAL NERVES IN AND OF THEMSELVES MAY NOT BE AS IMPORTANT AS PARESTHESIAS AND PAIN IN DISTRIBUTION. THIS BEING AN INDICATOR IDENTIFYING (LOCALIZING) SPINAL NERVE LESIONS. ALSO PAIN FROM DISEASE OF THE URETER AND RENAL PELVIS MAY REFER HERE.

4.4.2   CUTANEOUS BRANCHES

4.4.2.1       GROIN 35.031

4.4.2.1.1    PROXIMOMEDIAL SKIN OF THE THIGH(GROIN).

4.4.2.2       BASE O PENIS/MONS PUBIS 35.032

4.4.2.2.1   . IN MALES THE SKIN OVER THE PENILE ROOT AND UPPER PART OF SCROTUM. IN FEMALES, THE SKIN COVERING THE MONS PUBIS AND THE ADJOINING LABIUM MARORUS.

4.4.3   ARTICULAR BRANCHES

4.4.3.1       NONE

4.4.4   ROOTS

4.4.4.1       L1

4.4.4.2       Lumbar Plexus

4.4.4.3       VENTRAL

4.4.5   MUSCULAR BRANCHES

4.4.5.1       TRANSVERSE ABDOMINIS

4.4.5.1.1   THIS NERVE IS SUPPLIED BY THE VENTRAL RAMI T7-T12 AND THE ILLIOHYPOGASTRIC NERVES.

4.4.5.2       INTERNAL ABDOMINAL OBLIQUE

4.4.5.2.1   THIS NERVE IS SUPPLIED BY THE VENTRAL RAMI T7-T12 AND THE ILLIOHYPOGASTRIC NERVES.

4.4.6   NUMBER

4.4.6.1       . 35 .03

4.4.7   REFERENCE

4.4.7.1       67

4.5   GENITAL FEMORAL

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4.5.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.5.1.1       . SCARRING AND ADHESIONS FROM APPENDECTOMIES CAN CONSTRICT THE NERVE AND RESULT IN PARALYSIS OF THE CREMASTER MUSCLE. CREMASTERIC ACTIONS ARE NOT USUALLY VOLUNTARY, RAISING TESTES, ESSENTIAL TO TESTICULAR THERMOREGULATION. STIMULATION OF MEDIAL FEMORAL SKIN EVODES A REFLEX CONTRACTION; THIS WOULD BE LOST. HOWEVER, THIS IS NOT CONSIDERED A RELIABLETEST. PRESENTS AS A PARESTHESIA OR LOSS OF SENSATION TO THE SKIN IN THE CUTANEOUS DESCRIPTION FOR THIS NERVE.

4.5.2   NUMBER

4.5.2.1       35.04

4.5.3   REFERENCE

4.5.3.1       68

4.5.4   ROOTS

4.5.4.1       L1-L2

4.5.4.2       Lumbar Plexus

4.5.4.3       VENTRAL

4.5.5   CUTANEOUS BRANCHES

4.5.5.1       GENITAL BR 35.041

4.5.5.1.1    SUPPLIES THE SCROTAL SKIN IN MALES AND IN FEMALES THE SKIN OF THE MONS PUBIS, LABIUM MAJORUS AND PARTS OF VULVA INCLUDING THE CLITORIS, LABIA MINOR VVAGINA GREATER VESTIBULE(BARTHOLIN) GLANDS, AND BULB OF VESTIBULA.

4.5.5.2       FEMORAL BR 35.042

4.5.5.2.1   . SKIN OVER THE UPPER PART OF THE FEMORAL TRIANGLE.

4.5.6   ARTICULAR BRANCHES

4.5.6.1       NONE

4.5.7   MUSCULAR BRANCHES

4.5.7.1.1   CREMASTER

4.6   POSTERIOR FEMORAL CUTANEOUS

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4.6.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.6.1.1       . AFOCAL LESION TH THIS NERVE WILL PRODUCE PARESTHESIA OR LOSS OF SENSATION TO THE SKIN AREA OF THIS NERVE. PROLONGED BICYCLE RIDING CAN COMPRESS THE CLUNEAL BRANCHES RESULTING IN TEMPORARY NUMBNESS OF THE ARES SUPPLIED.

4.6.2   NUMBER

4.6.2.1       35.05

4.6.3   REFERENCE

4.6.3.1       85

4.6.4   ROOTS

4.6.4.1       S1-S2        S2-S3

4.6.4.2       Sacral Plexus

4.6.4.3       VENTRAL

4.6.5   DIVISION

4.6.5.1       Dorsal Ventral

4.6.6   CUTANEOUS BRANCHES

4.6.6.1       INFERIOR CLUNEAL(GLUTEAL)

4.6.6.1.1   3 OR 4 BRANCHES CURL AROUND THE LOWERBORDER OF THE GLUTEUS MAXIMUS
4.6.6.1.2    Supplies SKIN OVER INFERIOR ASPEXT OF BUTTOCKS (LOWER MEDIAL AUADRANT OF BUTTOCKS).

4.6.6.2       PERINEAL

4.6.6.2.1   . SUPEROMEDIAL SKIN OF THE THIGH BELOW THE ISCHIAL TUBEROSITY TO THE SUPERFICIAL PERINEAL FAXCIA SUPPLYING THE POSTERIOR SCROTAL OR LABIAL SKIN.
4.6.6.2.2   COMMUNICATING(PERINEAL)
4.6.6.2.2.1  PUDENDAL(COM)

4.6.6.2.2.1.1      

4.6.6.3       BACK O THIGH BR

4.6.6.3.1   SUPERFICIAL TO THE LONGG HEAD OF THE BICEPS FEMORIS WITH NUMEROUS BRANCHES FROM BOTH SIDES OF IT.
4.6.6.3.2   SUPPLIES THE SKIN OF THE BACK AND MEDIAL THIGH, THE POPLITEAL FOSSA AND THE PROXIMAL PART OF THE BACK OF THE LEG.

4.6.7   ARTICULAR BRANCHES

4.6.7.1       NONE

4.6.8   MUSCULAR BRANCHES

4.6.8.1       NONE

4.7   OBTURATOR

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4.7.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.7.1.1       . L2-L4 VENTRAL DIVISION OF THE VENTRAL RAMI, EXITING THROUGH THE MEDIAL BORDER OF THE PSOAS MAJOR. BEFORE PASSING THROUGH THE OBTURATOR FORAMEN IT BIFURCATES INTO ANTERIOR AND POSTERIOR DIVISIONS.

4.7.1.2       INJURY TO THIS NERVE IS RARE. IT IS VULNERABLE TO SURGICAL DAMAGE DURING PELVIC INTRUSION TO REMOVE MALIGNANT LYMPH NODES. PRESSURE FROM A GRAVID UTERUS AND DAMAGE FROM SEVERE LABOUR IS NOT UNCOMMON. IT MAY ALSO BE IRRITATED BY DISEASE OF AN OVARY.

4.7.1.3       PRESSENTS A WEAKNESS OR INABLIITY TO STABILIZE THE HIP. PARALYSIS OF ADDUCTORS AND OBTURATOR EXTERNUS WEAKEN BY ADDUCTION AND EXTERNAL ROTATION OF THE THIGH, MAKING CROSSING OF LEGS DIFFICULT. PARESTHESIA OR LOSS OF SENSATION TO THE SKIN AREAS DESCRIBED.

4.7.1.4       HIP JOINT DISEASE MAY CAUSE REFERRED PAIN TO THE MEDIAL SIDE OF THE THIGH. THE NERVE IS SOMETIMES SEVERED TO RELIEVE ADDUCTOR SPASM IN SPASTIC PARALYSIS, PARAPLEGIA OR MULTIPLE SCLEROSIS. TO DIFFERENTIATE A FOCAL OBTURATOR NERVE LESION FROM LUMBAR ROOT LESION, TEST THE FEMORAL NERVE, WHICH IS ALSO DERIVES FROM L2-L4.

4.7.2   NUMBER

4.7.2.1       35.06

4.7.3   REFERENCE

4.7.3.1       85

4.7.4   ROOTS

4.7.4.1       S1-S2        S2-S3

4.7.4.2       Lumbar Plexus

4.7.4.3       VENTRAL

4.7.5   DIVISION

4.7.5.1       Anterior Posterior

4.7.6   ANT DIVISION(OBTURATOR) 35.061

4.7.6.1       MUSCULAR BRANCHES (Ant Div)

4.7.6.1.1.1  ADDUCTOR LONGUS L2,L3,L4
4.7.6.1.1.2  GRACILLIS L2,L3
4.7.6.1.1.3  ADDUCTOR BREVIS  L3,L4

4.7.6.1.1.3.1     SOMETIMES FROM POSTERIOR BRANCH OF OBTURATOR NERVE ALSO

4.7.6.1.1.4  PECTINEUS  L2,L3

4.7.6.1.1.4.1     THIS USUALLY RECEIVES FROM THE FEMORAL NERVE OR SOMETIMES THE ACCESSORY OBTURATOR NERVE WHEN PRESENT

4.7.6.1.1.5   

4.7.6.2       ARTICULAR BRANCHES(ANT DIV)

4.7.6.2.1   HIP

4.7.6.3        CUTANEOUS BRANCHES(ANT DIV)

4.7.6.3.1   TO THE SKIN ON THE MEDIAL SIDE OF THIGH.

4.7.7   POSTERIOR DIVISION(OBTURATOR)

4.7.7.1       MUSCULAR BRANCHES (Posterior Div)

4.7.7.1.1   OBTURATOR EXXTERNUS L3,L4
4.7.7.1.2   ABDUCTOR MAGNUS (PROXIMAL HORIZONTAL) L2,L3,L4
4.7.7.1.2.1  THE DISTAL (ISCHIOCONDYLAR) MUSCULAR FIBERS ARE SUPPLIED BY TIBIAL DIVISION OF SCIATIC NERVE.
4.7.7.1.3   ADDUCTOR BREVIS (SOMETIMES) L3,L4

4.7.7.2       ARTICULAR BRANCHES(POST DIV)

4.7.7.2.1   KNEE (SOMETIMES ABSENT)

4.8   ACCESSORY OBTURATOR

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4.8.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.8.1.1       . EXITING THROUGH THE MEDIAL BOARDER OF PSOAS MAJOR. THIS NERVE IS PRESENT ABOUT 30% OF THE TIME WITH VARIATIONS.

4.8.1.2       IF PRESENT AND INJURED IT COULD MINIMALLY WEKEN ADDUCTION AND FLEXION OF THE HIP JOINT.

4.8.2   NUMBER

4.8.2.1       None

4.8.3   REFERENCE

4.8.3.1       71

4.8.4   ROOTS

4.8.4.1       L3, L4

4.8.4.2       Lumbar Plexus

4.8.4.3       VENTRAL

4.8.5   DIVISION

4.8.5.1       None

4.8.6   CUTANEOUS BRANCHES

4.8.6.1       None

4.8.7   ARTICULAR BRANCHES

4.8.7.1       None

4.8.7.1.1    

4.8.8   MUSCULAR BRANCHES

4.8.8.1       PECTINEUS

4.8.8.1.1   THE PECTINEUS MAY BE DIVIDED INTO ANTERIOR AND POSTERIOR STRATA. THE ACCESSORY OBTURATOR OR OBTURATOR NERVES SUPPLYING THE POSTERIOR STRATUM; THE FEMORAL NERVE SUPPLIES THE ANTERIOR STRATUM.

4.8.8.2       ADDUCTOR LONGUS  (SOMETIMES)

4.9   LAT FEM CUT

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4.9.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.9.1.1       . L2-3 DORSAL DIVISION FROM THE VENTRAL RAMI EXITING THROUGH THE LATYERAL BAORDER OF PSOAS MAJOR.

4.9.1.2       PRESENTS AS PARESTHESIA OR LOSS OF SENSATION TO THE SKIN AREA DESCRIBED.

4.9.2   NUMBER

4.9.2.1       35.07

4.9.3   REFERENCE

4.9.3.1       73

4.9.4   ROOTS

4.9.4.1       L2, L3

4.9.4.2       Lumbar Plexus

4.9.4.3       VENTRAL

4.9.5   DIVISION

4.9.5.1       Dorsal

4.9.6   CUTANEOUS BRANCHES

4.9.6.1       ANTERIOR 35.071

4.9.6.1.1    SUPPLIES THE SKIN OF THE ANTEROLATERAL THIGH AS FAR DISTAL AS THE KNEE AND FORMS PART OF PATELLAR PLEXUS.

4.9.6.2       POSTERIOR 35.072

4.9.6.2.1   . SUPPLIES THE SKIN OF THE LATERAL THIGH FROM THE GREATER TROCHANTER TO ABOUT THE MID-THIGH: IT MAY ALSO SUPPLY SOME OF THE GLUTEAL SKIN.

4.9.7   ARTICULAR BRANCHES

4.9.7.1       None

4.9.8   MUSCULAR BRANCHES

4.9.8.1       None

4.10 FEMORAL NERVE

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4.10.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.10.1.1   . Femoral nerve: injuries to the femoral nerve are usually due to trauma in the area of the femoral triangle. however, a tubercular abscess involving the psoas muscles can cause nerve compression, and disease from intervertebral lumbar discs and sacroiliac joints may cause spasm of the Iliopsoas, a Hematoma in the psoas muscle or beneath the iliacus fascia, can compress the femoral nerve between the inguinal ligament and the iliac bone. consequently, the iliacus and pectineus muscles could be weakened or paralysed, presenting as weak hip flexion. see also lesions of femoral nerve, anterior and posterior divisions, for further deficits.  femoral nerve(anterior div): injury to the anterior division of the femoral nerve alone would result in paralysis of the Sartorius muscle, presenting as weak knee flexion and contributing to instability of the anteromedial knee. Additionally, decreased strength in hip adduction, lateral rotation and flexion may bve seen. paresthesia or loss of sensation also occurs in the skin areas described above. a lesion proximal to the ingunal ligament would affect paralysis to both the anterior and posterior branches. femoral nerve(post div): (posterior branch); injury to the posterior branch of the femoral nerve is usually a result of trauma to the femoral triangle. this would produce wek hip flexion due to paralysis of rectus Femoris. knee extension will be all but obliterated due to paralysis to the entire quadriceps group; loss of patella tendon reflex is also seen. to isolate focal femoral nerve lseion from lumbar root, test the Obturator nerve, both derive from l2-l4. often both obturator and femoral nerves are affected. (saphenous nerv); trauma is the typical cause of injury to the saphenous nerve. it is in particular danger during operations on varicose veins, and the infrapatellar granch can be damaged during knee surgery. injury will present paresthesia or loss of sensation to the skin areas described above. l4 is the  primary root of the saphenous nerve. for focal differential diagnosis, check hip adductors (obturator enrve) and the Tibialis anterior (common Peroneal nerve) for l4 radiculopathy as opposed to femoral focal neuropathy.

4.10.1.2    

4.10.2            NUMBER

4.10.2.1   35.08

4.10.3            REFERENCE

4.10.3.1   74 75 76

4.10.4            ROOTS

4.10.4.1   L2, L3, L4

4.10.4.2   Lumbar Plexus

4.10.4.3   VENTRAL

4.10.5            DIVISION

4.10.5.1   Dorsal

4.10.6            FEMORAL (ANT DIV)(FEM N.) 35.081

4.10.6.1   CUTANEOUS BRANCHES

4.10.6.1.1             INTERMED FEM CUT L2, L3 35.0811
4.10.6.1.1.1                 L2 & L3 divides into medial and lateral branches
4.10.6.1.1.2                MEDIAL (Intermediate Femoral Cutaneous) 35.08111

4.10.6.1.1.2.1               Supplies the anteromedial thigh as far distal as the knee and terminating the the patellar plexus

4.10.6.1.1.3                . LATERAL(INT FEM CUT)   35.08112

4.10.6.1.1.3.1               Supplies the anterolateral thigh as far distal as the knee and terminating the the patellar plexus

4.10.6.1.2             MEDIAL FEM CUT L2, L3 35.0812
4.10.6.1.2.1                L2 & L3 SENDS A FEW RAMI TO SUPPLY THE SKIN (SEE NEXT COLLUM). THE NERVE THEN DIVIDES INO ANTERIOR AND POSTERIOR.
4.10.6.1.2.2                SKIN OF THE MEDIAL SIDE OF THE THIGH.
4.10.6.1.2.3                ANTERIOR(MED FEM CUT) 35.08121

4.10.6.1.2.3.1               SKIN OVER THE SARTORIUS BEYOND THE MID-THIGH.

4.10.6.1.2.4                POSTERIOR(MED FEM CUT) 35.08122

4.10.6.1.2.4.1               SKIN OVER THE ANTEROMEDIAL AND POSTEROMEDIAL ASPECTS OF THE KNEE AS FAR DISTAL AS THE LEG, FORMING PQART OF THE PATTELLAR PLEXUS.

4.10.6.2   ARTICULAR BRANCHES

4.10.6.2.1             None

4.10.6.3   MUSCULAR BRANCHES (FEM ANT DIV)

4.10.6.3.1             SARTORIUS L2, L3
4.10.6.3.1.1                Arising in common with the lateral branch of intermediate femoral cutaneous nerve

4.10.7            FEMORAL(POST DIV)(FEM N.) 35.082

4.10.7.1   CUTANEOUS BRANCHES

4.10.7.1.1             SAPHENOUS  L3, L4 35.0821
4.10.7.1.1.1                 L3 & L4 ENTERS ADDUCTOR CANAL AND EMERGES ON THE MEDIAL SIDE OF THE KNEE FORMING PART OF THE PATTELLAR PLEXUS. BETWEEN SARTORIUS AND GRACILLIS IT BECOMES CUTANEOUS.
4.10.7.1.1.2                SKIN OVER THE MEDIAL TIBIAL BORDER TO THE ANKLE AND MEDIAL SIDE OF THE FOOT.
4.10.7.1.2             INFRAPATTELLAR 35.0822
4.10.7.1.2.1                . SUPPLIES PREPATELLAR SKIN WITH BRANCHES TO PATELLAR PLEXUS.

4.10.7.2   ARTICULAR BRANCHES

4.10.7.2.1             None

4.10.7.3   MUSCULAR BRANCHES

4.10.7.3.1             VASTUS LATERALIS L2, L3, L4
4.10.7.3.1.1                ARTICULAR BRANCHES

4.10.7.3.1.1.1               KNEE

4.10.7.3.2             VASTUS MEDIALIS L2, L3, L4
4.10.7.3.2.1                ARTICULAR BRANCHES

4.10.7.3.2.1.1               KNEE

4.10.7.3.3             VASTUS INTERMEDIUS L2, L3, L4
4.10.7.3.3.1                ARTICULAR BRANCHES

4.10.7.3.3.1.1               KNEE

4.10.7.3.3.1.2               ARTICULAR GENUS(VAS INTER)

4.10.7.3.3.1.2.1                  FROM A BRANCH TO VASTUS INTERMEDIUS

4.10.7.3.4             RECTUS FEMORIS L2, L3, L4
4.10.7.3.4.1                ARTICULAR BRANCHES

4.10.7.3.4.1.1               KNEE

4.10.8            FEMORAL(ABDOMINAL BRANCHES)(FEM N.)

4.10.8.1   MUSCULAR BRANCHES(FEM ABD B)

4.10.8.1.1             ILLIACUS L2, L3
4.10.8.1.2             PECTINEUS L2, L3
4.10.8.1.2.1                THE PECTINEUS MAY ALSO BE SUP[PLIED BY THE OBTURATOR AND OR ACCESSORY OBTURATOR NERVES.

4.11 QUADRATUS FEMORIS N.

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4.11.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.11.1.1   . Very seldom injured by itself. a focal loss of this nerve would weaken external rotation of the extended thigh. posssible causes are trauma, hip dislocation, or malignant tumors arising from the pelvis, abdomen, or retroperitoneal structures. a herniated intervertebral disc or bony abnormalities from degenerative arthritis (spondyliosis) can also compress the lumbosacral trunk. each of the donditions above could show multiple deficits pertaining to l4 and l5. all nerves exiting from pelvic cavity may be vulnerable to these same traumas/etiologies; depending on the actual location various effects are seen.

4.11.2            NUMBER

4.11.2.1   None

4.11.3            REFERENCE

4.11.3.1   80

4.11.4            ROOTS

4.11.4.1   L4,L5,S1

4.11.4.2   Sacral Plexus

4.11.4.3   VENTRAL

4.11.5            DIVISION

4.11.5.1   Ventral

4.11.6            CUTANEOUS BRANCHES

4.11.6.1   None

4.11.7            ARTICULAR BRANCHES

4.11.7.1   HIP

4.11.8            MUSCULAR BRANCHES

4.11.8.1   QUADRATUS FEMORIS L4-S1

4.11.8.2   GEMEILUS INFERIOR L4-S1

4.12 OBTURATOR INTERNUS

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4.12.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.12.1.1   . VERY SELDOM INJURED BY ITSELF. A FOCAL LOSS OF THIS NERVE WOULD WEAKEN EXTERNAL ROTATION OF THE EXTENDED THIGH AND ABDUCTION OF THE FLEXED HIP. POSSIBLE CAUSES ARE TRAUMA, HIP DISLOCATION OR MALIGNANT TUMORS ARISING FROM PELVIC, ABDOMINAL OR RETROPERITONEAL STRUCTURES. A HERNIATED INTERVERTEBRAL DISC OR BONY ABNORMALITIES FROM DEGENERATIVE ARTHRITIS (SPONDYLOSIS) CAN COMPRESS LUMBOSACRAL TRUNK ROOTS OR CAUDA EQUINA. ALL OF WHICH WOULD SHOW MULITIPLE DEFICITS PERTQAINING TO L-L5. ALL NERVES EXITING FROM PELVIC CAVITY MAY BE VULNERABLE TO THESE SAME TRAMAS/ETIOLOGIES, DEPENDING ON DISTRIBUTION VARIOUS EFFECTS ARE SEEN.

4.12.2            NUMBER

4.12.2.1    

4.12.3            REFERENCE

4.12.3.1   81

4.12.4            ROOTS

4.12.4.1   L5-S2

4.12.4.2   Sacral Plexus

4.12.4.3   VENTRAL

4.12.5            DIVISION

4.12.5.1   Ventral

4.12.6            CUTANEOUS BRANCHES

4.12.6.1   None

4.12.7            ARTICULAR BRANCHES

4.12.7.1   None

4.12.8            MUSCULAR BRANCHES (OBTUR INTER)

4.12.8.1   OBTURATOR INTERNUS L5-S2

4.12.8.2   GEMEILUS SUPERIOR L5-S2

4.13 PIRIFORMIS

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4.13.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.13.1.1   . FOCAL LOSS OF THIS NERVE WOULD PARALYZE THE PIRIFORMIS MUSCLE, RESULTIN IN WEAK LATERL ROTATION OF THE EXTENDED HIP AND ABDUCTION OF THE FLEXED HIP.

4.13.2            NUMBER

4.13.2.1   None

4.13.3            REFERENCE

4.13.3.1   82

4.13.4            ROOTS

4.13.4.1   S1-S2

4.13.4.2   Sacral Plexus

4.13.4.3   VENTRAL

4.13.5            DIVISION

4.13.5.1   Dorsal

4.13.6            CUTANEOUS BRANCHES

4.13.6.1   None

4.13.7            ARTICULAR BRANCHES

4.13.7.1   None

4.13.8            MUSCULAR BRANCHES

4.13.8.1   PIRIFORMIS L5-S2

4.14 SUPERIOR GLUTEAL

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4.14.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.14.1.1   . THIS IS THE ONLY NERVE TO PASS THROUGH THE GREATER SCIATIC FORAMEN ABOVE THE PIRIFORMIS MUSCLE, SO IT MAY BE DAMAGED WHEN OTHER NERVES ARE SPARED; SUPERIOR GHLUTEAL NERVE IS RARELY INJURED ALONE. A RARE MISPLACEN INJECTION MAY BE AT FAULT. A FOCAL LESION WOULD RESULT IN THE PARALYSIS OF THE GLUTEUS MEDIUS AND MINIMUS AND TENSOR FASCIA LATAE MUSCLES. ALL ARE ABDUCTORS OF THE HIP AND THE ANTERIOR FIBERS OF THE GLUTEAL MUSCLES INTERNALLY ROTATE HIP/THIGH. THE GLUTEAL MUSCLES ARE ESSENTIAL FOR STABILIZING THE TRUNK WHEN THE OPPOSITE FOOT IS RAISED WHILE STANDING OR IN WALKING. A LESION PRESENT S AS A DROPPING OF THE PELVIS TO OPPOSITE SIDE WHEN THE AFFECTED LIMB IS ELEVATED (I.E. TRENDELENBURG'S SIGN OR GAIT). A SIMILAR GAIT OCCURS IN UNILATERAL POSTERIOR DISLOCATION OF THEHIP OR A PAINFUL SACROILIAC JOINT BOTH LEADING TO TRENDELENBURG'S SIGN THROUGH INABILITY OR REFLEX INHIBITION OF GLUTEUS MEDIUS AND MINIMUS ACTION.

4.14.2            NUMBER

4.14.2.1    

4.14.3            REFERENCE

4.14.3.1   83

4.14.4            ROOTS

4.14.4.1   L4-S1

4.14.4.2   Sacral Plexus

4.14.4.3   VENTRAL

4.14.5            DIVISION

4.14.5.1   Dorsal

4.14.6            CUTANEOUS BRANCHES

4.14.6.1   None

4.14.7            ARTICULAR BRANCHES

4.14.7.1   ARTICULAR BRANCH(S. GLUTEAL)

4.14.7.1.1             SACROILIAC

4.14.8            SUPERIOR BRANCH(S. GLUTEAL)

4.14.8.1   MUSCULAR BRANCHES

4.14.8.1.1             GLUTEUS MEDIUS L5-S1
4.14.8.1.2             GLUTEUS MINIMUS L5-S1
4.14.8.1.2.1                RARE
4.14.8.1.3              

4.14.9            INFERIOR BRANCH(S. GLUTEAL)

4.14.9.1   MUSCULAR BRANCHES

4.14.9.1.1             GLUTEUS MEDIUS L5-S1
4.14.9.1.2             GLUTEUS MINIMUS L5-S1
4.14.9.1.3             TENSOR FASCIA LATA L4-S1

4.15 INFERIOR GLUTEAL

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4.15.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.15.1.1   . The inferior gluteal nerve is injured more ferquently than the superior gluteal nerve, and is almost never damaged without associated lesions of the sciatic, pudendal, or posterior femoral cutaneous nerves of the thigh. Focal lesions would present weakness to extend the flexed hip, causing difficulty in climbing stairs, standing from a seated position, and running or jumping.

4.15.2            NUMBER

4.15.2.1   None

4.15.3            REFERENCE

4.15.3.1   84

4.15.4            ROOTS

4.15.4.1   L5-S2

4.15.4.2   Sacral Plexus

4.15.4.3   VENTRAL

4.15.5            DIVISION

4.15.5.1   Dorsal

4.15.6            CUTANEOUS BRANCHES

4.15.6.1   None

4.15.7            ARTICULAR BRANCHES

4.15.7.1    

4.15.7.1.1              

4.15.8            MUSCULAR BRANCHES

4.15.8.1   GLUTEUS MAXIMUS L5-S2

4.15.8.1.1             Deep surface after exiting greater sciatic foramen descending around the pirformis muscle.

4.16 SACRAL PLEXUS L4-S3

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4.16.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.16.1.1   Sacral plexus(l4; lumbosacral trunk): produces weak knee extension (obturator nerve) with reduced patellar tendon reflex and paresthesia to the dkin of the medial leg (femoral and saphenous nerves), weak hip adduction (sciatic nerve), "footdrop" from loss of tibialis anterior and posterior (titbial and deep peroneal nerves) and paresthesias to the skin of the medial side of the sole of the foot (medial plantar nerve). Injury to l5: "trendelenburg's sign" (superior gluteal nerve), weak knee flexion (tibial nerve), weak dorsiflexion ("foot drop") and eversion of toot at the subtalar and intertarsal joints, weak extension of toes and paresthesias to the skin of lateral leg, dorsum of toot and middle sole of foot (common, deep and superficial peroneal nerves). Injury to s1: weak hip extension (tibial nerve), plantarflexion and toe flexion (deep peroneal nerve). Injury of s2-3: paresthesia to skin of posterior thigh and leg (pasterior femoral cutaneous nerve), weak plantar flexion and inversion of foot, weak flexion, adduction/abduction of toe (tibial nerve), and loss of voluntary control of pelvic floor and anal sphincter (pudendal nerve).

4.16.2            REFERENCE

4.16.2.1   77

4.16.3             

4.17 SCIATIC (TIBIAL/COMMON PERONEAL)

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4.17.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.17.1.1   . Sciatic nerve: trauma, fractures or posterior dislocations of the hip (coxal) joint, and attempts to repair them, often damage this nerve. Damage is common in vehicle accidents with impact to the knees. Thus causing the head of the femur through the acetabulum. More common would be herniated intervertebral disc, misplaced injection or osteoarthirtis of spine or sacroiliac joint. A complete lesion  produces total paralysis of the hamstrings and of all muscles below the knee, with additional weakness to adductor Magnus. A sensory loss will also occur in the distributions of the tibia and common Peroneal nerves leaving only the saphenous nerve distribution below the knee joint. A partial lesion of the lateral trunk, i.e., the source of the common Peroneal nerve, is more common of the two. Care must be taken to distinguish this from a focal lesion of the common Peroneal nerve. See lesions for both tibia and common Peroneal nerves.

4.17.2            NUMBER

4.17.2.1   None

4.17.3            REFERENCE

4.17.3.1   86

4.17.4            ROOTS

4.17.4.1   L4-S3

4.17.4.2   Sacral Plexus

4.17.4.3   Ventral

4.17.5            DIVISION

4.17.5.1   Dorsal Ventral

4.17.6            CUTANEOUS BRANCHES

4.17.6.1   None

4.17.7            ARTICULAR BRANCH (SCIATIC)

4.17.7.1   Hip

4.17.8            MUSCULAR BRANCHES (SCIATIC)

4.17.8.1   BICEPS FEMORIS (SHORT HEAD) L5, S1, S2

4.17.8.2   BICEPS FEMORIS (LONG HEAD) L5, S1, S2, S3

4.17.8.3   SEMITENDINOSUS (TIBIAL DIVISION) L5, S1, S2

4.17.8.4   SEMIMEMBRANOSUS (TIBIAL DIV) L5-S2

4.17.8.5   ADDUCTOR MAGNUS (TIBIAL DIV) L4

4.17.8.5.1             THE HORIZONTAL FIBERS OF THE ADDUCTOR MAGNUS ARE SUPPLIED BY THE OBTURATOR NERVE L2-L4

4.18 COMMON PERONAL(FIBULAR)(SCIATIC)

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4.18.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.1.1   . Common peroneal: this is the most commonly injured nerve in the lower leg. Primary causes are from direct impact, expecially at the fibular head, or by fractures of the fibula and compression from prolonged kneeling or sitting with legs crossed.

4.18.1.2   Sacral plexus and sciatic nerve lesins freauently affect the common peroneal nerve. Focal lesion to this nerve would produce paresthesia or loss of sensation to the skin described above. See deep peroneal and superficial peroneal nerves.

4.18.1.3   Deep peroneal(anterior tibial): focal lesions to this nerve are usually caused by trauma. The superficial peroneal would most likely be affected. Injury would present "drop foot", inability to dorsifles and weak eversion at the subtalar and  intertarsal joints. The action is saved if peroneus longus muscle and superficial peroneal nerve survive. See lesions of the medial and lateral branches of the deep peroneal nerve. Deep per(med & lat term br): the terminal branches may be injured where they cross the ankle and on the dorsum of the foot by trauma, ankle fractures, dislocations nad sprains. Spontaneous entrapment beneath the inferior extensor retinaculum has been termed anterior tarsal tunnel syndrome. This focal lesion can go undectected , the cutaneous distribution being so small and the extensor action of the toe musculature minimal. Superficial peroneal: focal lesions to this nerve are common because of its superficial location. Howerver, the common peroneal is more vulnerable and likely to be damaged, affecting both deep and superficial peroneal nerves. Focal lesions will present an inverted foot by the unopposed action of the deep crural muscle group (tibia innervation). Weakness in eversion of the subtalar and intertarsal joints this action is saved by the extensor digitorum longus, and is present if peroneus tertius survives. Superficial personeal(medial and lateral terminal branches): focal lesions distal to the muscular branches of the superficial peroneal nerve sould result  in paresthesias to the skin areas described above. Either or both medial and lateral branches may be subject to trauma.

4.18.2            NUMBER

4.18.2.1   35.09

4.18.3            REFERENCE

4.18.3.1   93

4.18.4            ROOTS

4.18.4.1   L4-S2

4.18.4.2   Sacral Plexus

4.18.4.3   VENTRAL

4.18.5            DIVISION

4.18.5.1   Dorsal

4.18.5.2    

4.18.6            CUTANEOUS BRANCHES (COM PER)

4.18.6.1   LATERAL SURAL (LAT CUT N. OF CALF)

4.18.6.1.1             NUMBER
4.18.6.1.1.1                35.091
4.18.6.1.2             REFERANCE
4.18.6.1.2.1                93
4.18.6.1.3             ROOTS
4.18.6.1.3.1                L4-S1
4.18.6.1.3.2                Sacral Plexus
4.18.6.1.3.3                VENTRAL
4.18.6.1.4             DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS
4.18.6.1.4.1                A COMMUNICATING BRANCH ARISES AND CONNECTS WITH THE MEDIAL SURAL NERVE OF THE TIBIAL TO FORM SURAL AND CONTINUES TO DISTRIBUTE TO LATERAL FOOT.
4.18.6.1.4.2                SUPPLIES THE SKIN OF THE ANTERIOR, LATERAL, AND POSTERIOR ASPECTS OF THE PROXIMAL LEG.
4.18.6.1.5             COMMUNICATING(LATERAL SUR)

4.18.6.1.5.1.1               MEDIAL SURAL NERVE (COM)

4.18.7            ARTICULAR BRANCHES(COM PER)

4.18.7.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.7.1.1             THREE BRANCHES TRAVEL TO THE ANTEROLATERAL PART OF THE KNEE CAPSULE AND THE PROXIMAL TIBIO-FIBULAR JOINT THAT PASS WITH THE FOLLOWING ARTERIES; SUPERIOR LATERAL GENICULAR, LATERAL GENICULAR,ANTERIOR TIBIAL RECCURRENT.

4.18.7.2   KNEE

4.18.7.3   TIBIO-FIBULAR

4.18.8            DEEP PERONEAL(ANTERIOR TIBIAL N)(COM PER)

4.18.8.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.8.1.1             BRANCHES ARISING IN THE LEG. L4-S2 THROUGH DORSAL DIVISIONS OF THE SACRAL PLEXUS THROUGH THE SCIATIC NERVE; BRANCHES WITHIN THE PERONEUS LONGUS MUSCLE INTO DEEP AND SUPERFICIAL PERONEAL NERVE.

4.18.8.2   NUMBER

4.18.8.2.1             35.092

4.18.8.3   REFERANCE

4.18.8.3.1             94

4.18.8.4   ROOTS

4.18.8.4.1             L4-S2
4.18.8.4.2             Sacral Plexus
4.18.8.4.3             VENTRAL

4.18.8.5   DIVISION

4.18.8.5.1             DORSAL

4.18.8.6   ARTICULAR BRANCHES(DEEP PER)

4.18.8.6.1             TALOCRURAL

4.18.8.7   MUSCULAR BRANCHES(DEEP PER)

4.18.8.7.1             TIBIALIS ANTERIOR L4-L5
4.18.8.7.2             EXTENSOR HALLUCIS LONGUS L5-S1
4.18.8.7.3             EXTENSOR DIGITORUM LONGUS L5-S1
4.18.8.7.4             PERONEUS TERTIUS L5-S1

4.18.8.8   MEDIAL TER BR OF DP PERONEAL(DEEP PER)

4.18.8.8.1             NUMBER
4.18.8.8.1.1                35.0921
4.18.8.8.2             REFERENCE
4.18.8.8.2.1                95
4.18.8.8.3             CUTANEOUS BRANCH(MED TER)
4.18.8.8.3.1                1ST DD(CUT) 35.09211
4.18.8.8.3.2                2ND DD(CUT) 35.09212
4.18.8.8.4             ARTICUALR BRANCH(MED TER)
4.18.8.8.4.1                HALLUCIAL METARSOPHALANGEAL(ART)
4.18.8.8.5             MUSCULAR BRANCHES(MED TER) S1-S2
4.18.8.8.5.1                EXTENSOR DIGITORUM BREVIS
4.18.8.8.5.2                EXTENSOR HALLUCIS BREVIS
4.18.8.8.5.3                2ND DORSAL INTEROSSEOUS

4.18.8.9   LATERAL TER BR OF DP PERONEAL(DEEP PER) 95

4.18.8.9.1             ARTICUALR BRANCHES(LAT TERM)
4.18.8.9.1.1                BY THREE INTEROSSEOUS BRANCHES
4.18.8.9.1.2                TARSAL(ART)
4.18.8.9.1.3                METARSOPHALANGEAL OF THE MIDDLE THREE TOES(ART)
4.18.8.9.2             MUSCULAR BRANCH(LAT TERM) S1-S2
4.18.8.9.2.1                1ST DORAL INTEROSSEUS

4.18.9            SUPERFICIAL PERN(COM PER)

4.18.9.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.1.1             L5-S2 THROUGH DORSAL DIVISIONS FROM LUMBAR AND SACRAL VENTRAL RAMI OF THE SACRAL PLEXUS, THROUGH THE SCIATIC NERVE AND BRANCHING SUPERFICIAL FROM THE DEEP PERONEAL NERVE.

4.18.9.2   NUMBER

4.18.9.2.1             35.093

4.18.9.3   REFERENCE

4.18.9.3.1             96

4.18.9.4   ROOTS

4.18.9.4.1             L5-S2
4.18.9.4.2             Sacral Plexus
4.18.9.4.3             VENTRAL

4.18.9.5   DIVISION

4.18.9.5.1             Dorsal

4.18.9.6   MUSCULAR BRANCHES(SUP PERON) L5,S1,S2

4.18.9.6.1             PERONEUS LONGUS
4.18.9.6.2             PERONEUS BREVIS

4.18.9.7   LATERAL(DORSAL INTERMDT)(SUP PERN)

4.18.9.7.1             NUMBER
4.18.9.7.1.1                35.0931
4.18.9.7.2             REFERENCE
4.18.9.7.2.1                97
4.18.9.7.3             CUTANEOUS BRANCHES(LATERAL)
4.18.9.7.3.1                DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.7.3.1.1               PASSES ON THE OUTER SIDE OF THE DORSUM OF THE FOOT, AND DIVIDES INTO TWO BRANCHES , THE INNER BEING DISTRIBUTED TO THE CONTIGUOUS SIDES OF THE THIRD AND FOURTH TOES, THE OUTER TO OPPOSED SIDES OF 4TH&5TH TOES, SKIN OF THE ANEROLATERAL LOWERLEG, ANKLE AND FOOT. IT THEN DIVES INTO DORSAL DIGITAL NERVES TO SUPPLY THIRD AND FORTH, AND FORTH AND FIFTH TOES. SUPPLIES THE INTEGUMENT OF THE OUTER ANKLE AND OUTER SIDE OF THE FOOT.

4.18.9.7.3.2                COMMUNICATING(CUT)

4.18.9.7.3.2.1               SHORT SAPHENOUS N. ?(G)(COM)

4.18.9.7.3.3                1ST DD(CUT) 35.09311

4.18.9.7.3.3.1               CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.7.3.3.1.1                  ADJACENT SIDES OF 3RD AND 4TH TOES

4.18.9.7.3.4                2ND DD(CUT) 35.09312

4.18.9.7.3.4.1               CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.7.3.4.1.1                  ADJACENT SIDES OF 3RD AND 4TH TOES

4.18.9.8   MEDIAL(DORSAL MEDIAL)(SUP PERN)

4.18.9.8.1             NUMBER
4.18.9.8.1.1                35.0932
4.18.9.8.2             REFERENCE
4.18.9.8.2.1                97
4.18.9.8.3             CUTANEOUS BRANCHES(MEDIAL)
4.18.9.8.3.1                DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.8.3.1.1               PASSES IN FRONT OF THE ANKLE JOINT, AND DIVIDES INTO TWO BRANCHES, ONE SUPPLIES THE INNER SIDE OF THE GREAT TOE, THE OTHER THE ADJACENT SIDE OF THE  2ND & 3RD TOES.

4.18.9.8.3.1.2               SKIN OF THE ANTERIOR CENTRAL LOWER  LEG, ANKLE AND FOOT THEN DIVIDING INTO DORSAL DIGITAL NERVES TO SUPPLY THE MEDIAL SIDE OF THE BIG TOE AND THE ADJACENT SIDES OF THE SECOND AND THIRD TOES.

4.18.9.8.3.2                1ST DD(CUT) 35.09321

4.18.9.8.3.2.1               CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.8.3.2.1.1                  MEDIAL SIDE OF GREAT TOE

4.18.9.8.3.3                2ND DD(CUT) 35.09322

4.18.9.8.3.3.1               CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.18.9.8.3.3.1.1                  ADJACENT SIDES OF 2ND AND 3RD TOES

4.19 TIBIAL

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4.19.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.19.1.1   . 1.) Tibial(gastr head):sacral plexus and sciatic nerve injuries usually involve tibial fibers; distal focal lesions, although rare, are less lidely than common peroneal nerve lesions due to deeper tibial nerve pathway. Trauma is the most likely etiology of  focal tibial paralysis. Presents as wek knee flexion due to paralysis of the gastrocnemus (a secondaryu action of this muscle).  This action is saved by the hamstrings. Loss of plantar flexion, and supination of foot due to paralysis of the posterior compartment musculature of the leg. Peroneus longus and brevis  would be theonly muscles left for plantar flexion (superficial peronesl nerve). Further, there is an inability to flex, adduct/abduct the toes, due to paralysis of all intrinsic plantar foot muscles (medial and lateral plantar nerves). Paresthesia or loss of sensation to plantar nerve distribution would also occur.

4.19.1.2   2.) Tibial(br arise in leg): injury to the tibial nerve is uncommon due to its deep location in the calf. A focal lesion would present weakness in plantar flexion. Plantar flexion is not lost if gastrocnemius is intact. Paralysis of the deep posterior crural muscles would present weakness in foot inversion; this movement is saved by the tibialis anterior (deep peroneal nerve). Flexion, adduction and abduction of toes would be lost due to distal inervation of the same nerve branches to plantar foot. Patient wil be unable to stand on tip toes. See also medial and lateral plantar nerves.

4.19.1.3   3.) Tibial(medial sural and medial calcanean cutaneous branches): presents as paresthesia or loss of sensation to the skin described above. Testing these areas can help in differential diagnosis of  focal tibial lessions

4.19.2            NUMBER

4.19.2.1   35.10

4.19.3            REFERENCE

4.19.3.1   87 88

4.19.4            ROOTS

4.19.4.1   L4-S3

4.19.4.2   Sacral Plexus

4.19.4.3   VENTRAL

4.19.5            DIVISION

4.19.5.1   Ventral

4.19.5.2    

4.19.6            CUTANEOUS BRANCHES (TIBIAL NERVE)

4.19.6.1   MEDIAL SURAL(SURAL) (TIBIAL NERVE) (CUTANEOUS)

4.19.6.1.1             DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS
4.19.6.1.1.1                DESCENDS SUPERFICIALLY BETWEEN THE HEADS OF THE GASTROCNEMIUS AND IS JOINED BY THE COMMUNICATING BRANCH OF THE LATERAL SURAL NERVE OF COMMON PERONEAL NERVE. THE COMMUHNICATIJNG BRANCH MAY DESCEND SEPARATELY, AND JOIN MEDIAL SURAL AS FAR DISTAL AS THE HEEL POSTEROLATERAL SKIN OF THE DISTAL THIRD OF THE CALF AND THE LATERAL SIDE OF THE FOOT AND LITTLE TOE.
4.19.6.1.2             NUMBER
4.19.6.1.2.1                35.101
4.19.6.1.3             REFERENCE
4.19.6.1.3.1                89
4.19.6.1.4             .ROOTS
4.19.6.1.4.1                L5-S2
4.19.6.1.5             COMMUNICATING(MED SUR)
4.19.6.1.5.1                LATERAL SURAL N OF COMMON PERONEAL(COM)

4.19.6.1.5.1.1               DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.19.6.1.5.1.1.1                  L5,S1,S2(SURAL N.) AND S1,S2(MEDIAL CALCANEAN N.). BOTH BRANCHES ARE VIA THE VENTRAL DIVISIONS FROM THE LUMBAR AND SACRAL VENTRAL RAMI OF THE SACRAL PLEXUS THROUGH THE SCIATIC NERVE AS THE SURAL AND MEDIAL CALCANEAN BRANCHES OF THE TIBIAL NERVE, RESP.

4.19.6.1.6             1ST DD(MED SUR) 35.1011
4.19.6.1.6.1                LATERAL SIDE OF LITTLE TOE

4.19.6.2   MEDIAL CALCANEAL (TIBIAL NERVE) (CUTANEOUS)

4.19.6.2.1             DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS
4.19.6.2.1.1                ARISES PROXIMAL TO THE TARSAL TUNNEL, PERFORATING THE FLEXOR RETINACULUM.
4.19.6.2.1.2                SKIN OF THE MEDIAL SIDE OF THE PLANTAR SURFACE OF THE FOOT AND HEEL.
4.19.6.2.1.3                L5,S1,S2(SURAL N.) AND S1,S2(MEDIAL CALCANEAN N.). BOTH BRANCHES ARE VIA THE VENTRAL DIVISIONS FROM THE LUMBAR AND SACRAL VENTRAL RAMI OF THE SACRAL PLEXUS THROUGH THE SCIATIC NERVE AS THE SURAL AND MEDIAL CALCANEAN BRANCHES OF THE TIBIAL NERVE, RESP.
4.19.6.2.2             NUMBER
4.19.6.2.2.1                35.102
4.19.6.2.3             REFERENCE
4.19.6.2.3.1                89
4.19.6.2.4             .ROOTS
4.19.6.2.4.1                S1-S2

4.19.7            MEDIAL PLANTAR(TIBIAL)

4.19.7.1.1             NUMBER
4.19.7.1.1.1                35.103
4.19.7.1.2             REFERENCE
4.19.7.1.2.1                90
4.19.7.1.3             .ROOTS
4.19.7.1.3.1                L4-5

4.19.7.2   ARTICULAR BRANCHES(MED PLANTAR)

4.19.7.2.1              

4.19.8            ARTICULAR BRANCHES (TIBIAL NERVE)

4.19.8.1   KNEE 35.1041

4.19.8.1.1             3 BRANCHES TO KNEE JOINT.

4.19.8.2   ANKLE

4.19.8.2.1             TO THE ANKLE BEFORE IT BIFURCATES AS MEDIAL AND LATERAL PLANTAR NERVES.

4.19.9            MUSCULAR BRANCHES (TIBIAL NERVE)

4.19.9.1   POPLITEUS L4-S1

4.19.9.1.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS
4.19.9.1.2             ARTICULAR BRANCH(POPLITEUS)
4.19.9.1.2.1                TIBIOFIBULAR
4.19.9.1.2.2                INTEROSSEOUS
4.19.9.1.2.3                DISTAL TIBIOFIBULAR

4.19.9.2   GASTROCNEMIUS (LATERAL HEAD) S1-S2

4.19.9.2.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS

4.19.9.3   GASTROCNEMIUS (MEDIAL HEAD) S1-S2

4.19.9.3.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS

4.19.9.4   PLANTARIS  S1-S2

4.19.9.4.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS

4.19.9.5   SOLEUS S1-S2

4.19.9.5.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS. ALSO BRANCHES ARISING IN THE LEG

4.19.9.6   TIBIALIS POSTERIOR L4-L5

4.19.9.6.1             BRANCHES ARISING BETWEE GASTROCNEMIUS HEADS. ALSO BRANCHES ARISING IN THE LEG.L4,L5=FROMBRANCH TO POPLITEUS.

4.19.9.7   FLEXOR DIGITORUM LONGUS S2-S3

4.19.9.7.1             BRANCHES ARISING IN THE LEG

4.19.9.8   FLEXOR HALLUCIS LONGUS S2-S3

4.19.9.8.1             BRANCHES ARISING IN THE LEG

4.20 PERFORATING CUT

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4.20.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.20.1.1   .

4.20.2            NUMBER

4.20.2.1   35

4.20.3            REFERENCE

4.20.3.1    

4.20.4            ROOTS

4.20.4.1    

4.20.4.2   Lumbar Plexus

4.20.4.3   VENTRAL

4.20.5            DIVISION

4.20.5.1   Dorsal Ventral

4.20.5.2    

4.20.6            CUTANEOUS BRANCHES

4.20.6.1    

4.20.6.1.1              

4.20.6.2    

4.20.6.2.1             .

4.20.7            ARTICULAR BRANCHES

4.20.7.1    

4.20.7.1.1              

4.20.8            MUSCULAR BRANCHES

4.20.8.1    

4.20.8.2    

4.20.8.3    

4.20.8.4    

4.20.8.5    

4.20.8.6    

 

4.21 4TH SACRAL NERVE(SACRAL MUSCULAR BRANCHES)

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4.21.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.21.1.1   .

4.21.2            NUMBER

4.21.2.1   35

4.21.3            REFERENCE

4.21.3.1    

4.21.4            ROOTS

4.21.4.1    

4.21.4.2   Lumbar Plexus

4.21.4.3   VENTRAL

4.21.5            DIVISION

4.21.5.1   Dorsal Ventral

4.21.5.2    

4.21.6            CUTANEOUS BRANCHES

4.21.6.1    

4.21.6.1.1              

4.21.6.2    

4.21.6.2.1             .

4.21.7            ARTICULAR BRANCHES

4.21.7.1    

4.21.7.1.1              

4.21.8            MUSCULAR BRANCHES

4.21.8.1    

4.21.8.2    

4.21.8.3    

4.21.8.4    

4.21.8.5    

4.21.8.6    

 

4.22 PUDENDAL N(INF RECTAL BR-INF HEMORRHOIDAL N.)

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4.22.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.22.1.1   .

4.22.2            NUMBER

4.22.2.1   35

4.22.3            REFERENCE

4.22.3.1    

4.22.4            ROOTS

4.22.4.1    

4.22.4.2   Lumbar Plexus

4.22.4.3   VENTRAL

4.22.5            DIVISION

4.22.5.1   Dorsal Ventral

4.22.5.2    

4.22.6            CUTANEOUS BRANCHES

4.22.6.1    

4.22.6.1.1              

4.22.6.2    

4.22.6.2.1             .

4.22.7            ARTICULAR BRANCHES

4.22.7.1    

4.22.7.1.1              

4.22.8            MUSCULAR BRANCHES

4.22.8.1    

4.22.8.2    

4.22.8.3    

4.22.8.4    

4.22.8.5    

4.22.8.6    

 

4.23  

4.23.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

4.23.1.1   .

4.23.2            NUMBER

4.23.2.1   35

4.23.3            REFERENCE

4.23.3.1    

4.23.4            ROOTS

4.23.4.1    

4.23.4.2   Lumbar Plexus

4.23.4.3   VENTRAL

4.23.5            DIVISION

4.23.5.1   Dorsal Ventral

4.23.5.2    

4.23.6            CUTANEOUS BRANCHES

4.23.6.1    

4.23.6.1.1              

4.23.6.2    

4.23.6.2.1             .

4.23.7            ARTICULAR BRANCHES

4.23.7.1    

4.23.7.1.1              

4.23.8            MUSCULAR BRANCHES

4.23.8.1    

4.23.8.2    

4.23.8.3    

4.23.8.4    

4.23.8.5    

4.23.8.6    

5      TORSO

5.1   LATERAL PECTORAL

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5.1.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.1.1.1       .

5.1.2   NUMBER

5.1.2.1       35

5.1.3   REFERENCE

5.1.3.1        

5.1.4   ROOTS

5.1.4.1        

5.1.4.2       Lumbar Plexus

5.1.4.3       VENTRAL

5.1.5   DIVISION

5.1.5.1       Dorsal Ventral

5.1.5.2        

5.1.6   CUTANEOUS BRANCHES

5.1.6.1        

5.1.6.1.1    

5.1.6.2        

5.1.6.2.1   .

5.1.7   ARTICULAR BRANCHES

5.1.7.1        

5.1.7.1.1    

5.1.8   MUSCULAR BRANCHES

5.1.8.1        

5.1.8.2        

5.1.8.3        

5.1.8.4        

5.1.8.5        

5.1.8.6        

5.2   MEDIAL PECTORAL

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5.2.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.2.1.1       .

5.2.2   NUMBER

5.2.2.1       35

5.2.3   REFERENCE

5.2.3.1        

5.2.4   ROOTS

5.2.4.1        

5.2.4.2       Lumbar Plexus

5.2.4.3       VENTRAL

5.2.5   DIVISION

5.2.5.1       Dorsal Ventral

5.2.5.2        

5.2.6   CUTANEOUS BRANCHES

5.2.6.1        

5.2.6.1.1    

5.2.6.2        

5.2.6.2.1   .

5.2.7   ARTICULAR BRANCHES

5.2.7.1        

5.2.7.1.1    

5.2.8   MUSCULAR BRANCHES

5.2.8.1        

5.2.8.2        

5.2.8.3        

5.2.8.4        

5.2.8.5        

5.2.8.6        

5.3   1ST THOR INTERCSTL N

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5.3.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.3.1.1       .

5.3.2   NUMBER

5.3.2.1       35

5.3.3   REFERENCE

5.3.3.1        

5.3.4   ROOTS

5.3.4.1        

5.3.4.2       Lumbar Plexus

5.3.4.3       VENTRAL

5.3.5   DIVISION

5.3.5.1       Dorsal Ventral

5.3.5.2        

5.3.6   CUTANEOUS BRANCHES

5.3.6.1        

5.3.6.1.1    

5.3.6.2        

5.3.6.2.1   .

5.3.7   ARTICULAR BRANCHES

5.3.7.1        

5.3.7.1.1    

5.3.8   MUSCULAR BRANCHES

5.3.8.1        

5.3.8.2        

5.3.8.3        

5.3.8.4        

5.3.8.5        

5.3.8.6        

5.4   2ND THOR INTRCSTL N

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5.4.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.4.1.1       .

5.4.2   NUMBER

5.4.2.1       35

5.4.3   REFERENCE

5.4.3.1        

5.4.4   ROOTS

5.4.4.1        

5.4.4.2       Lumbar Plexus

5.4.4.3       VENTRAL

5.4.5   DIVISION

5.4.5.1       Dorsal Ventral

5.4.5.2        

5.4.6   CUTANEOUS BRANCHES

5.4.6.1        

5.4.6.1.1    

5.4.6.2        

5.4.6.2.1   .

5.4.7   ARTICULAR BRANCHES

5.4.7.1        

5.4.7.1.1    

5.4.8   MUSCULAR BRANCHES

5.4.8.1        

5.4.8.2        

5.4.8.3        

5.4.8.4        

5.4.8.5        

5.4.8.6        

5.5   UPPER INTERCSTL=T3-6

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5.5.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.5.1.1       .

5.5.2   NUMBER

5.5.2.1       35

5.5.3   REFERENCE

5.5.3.1        

5.5.4   ROOTS

5.5.4.1        

5.5.4.2       Lumbar Plexus

5.5.4.3       VENTRAL

5.5.5   DIVISION

5.5.5.1       Dorsal Ventral

5.5.5.2        

5.5.6   CUTANEOUS BRANCHES

5.5.6.1        

5.5.6.1.1    

5.5.6.2        

5.5.6.2.1   .

5.5.7   ARTICULAR BRANCHES

5.5.7.1        

5.5.7.1.1    

5.5.8   MUSCULAR BRANCHES

5.5.8.1        

5.5.8.2        

5.5.8.3        

5.5.8.4        

5.5.8.5        

5.5.8.6        

5.6   LWR INTCSTL N.=T7-11

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5.6.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.6.1.1       .

5.6.2   NUMBER

5.6.2.1       35

5.6.3   REFERENCE

5.6.3.1        

5.6.4   ROOTS

5.6.4.1        

5.6.4.2       Lumbar Plexus

5.6.4.3       VENTRAL

5.6.5   DIVISION

5.6.5.1       Dorsal Ventral

5.6.5.2        

5.6.6   CUTANEOUS BRANCHES

5.6.6.1        

5.6.6.1.1    

5.6.6.2        

5.6.6.2.1   .

5.6.7   ARTICULAR BRANCHES

5.6.7.1        

5.6.7.1.1    

5.6.8   MUSCULAR BRANCHES

5.6.8.1        

5.6.8.2        

5.6.8.3        

5.6.8.4        

5.6.8.5        

5.6.8.6        

5.7   1ST DORSAL RAMUS(SUBOCCIPITAL N)

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5.7.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.7.1.1       .

5.7.2   NUMBER

5.7.2.1       35

5.7.3   REFERENCE

5.7.3.1        

5.7.4   ROOTS

5.7.4.1        

5.7.4.2       Lumbar Plexus

5.7.4.3       VENTRAL

5.7.5   DIVISION

5.7.5.1       Dorsal Ventral

5.7.5.2        

5.7.6   CUTANEOUS BRANCHES

5.7.6.1        

5.7.6.1.1    

5.7.6.2        

5.7.6.2.1   .

5.7.7   ARTICULAR BRANCHES

5.7.7.1        

5.7.7.1.1    

5.7.8   MUSCULAR BRANCHES

5.7.8.1        

5.7.8.2        

5.7.8.3        

5.7.8.4        

5.7.8.5        

5.7.8.6        

5.8   2ND DOR RAMUS(GREATER OCCIPITAL N)

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5.8.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.8.1.1       .

5.8.2   NUMBER

5.8.2.1       35

5.8.3   REFERENCE

5.8.3.1        

5.8.4   ROOTS

5.8.4.1        

5.8.4.2       Lumbar Plexus

5.8.4.3       VENTRAL

5.8.5   DIVISION

5.8.5.1       Dorsal Ventral

5.8.5.2        

5.8.6   CUTANEOUS BRANCHES

5.8.6.1        

5.8.6.1.1    

5.8.6.2        

5.8.6.2.1   .

5.8.7   ARTICULAR BRANCHES

5.8.7.1        

5.8.7.1.1    

5.8.8   MUSCULAR BRANCHES

5.8.8.1        

5.8.8.2        

5.8.8.3        

5.8.8.4        

5.8.8.5        

5.8.8.6        

5.9   3RD DORSAL RAMUS

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5.9.1   DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.9.1.1       .

5.9.2   NUMBER

5.9.2.1       35

5.9.3   REFERENCE

5.9.3.1        

5.9.4   ROOTS

5.9.4.1        

5.9.4.2       Lumbar Plexus

5.9.4.3       VENTRAL

5.9.5   DIVISION

5.9.5.1       Dorsal Ventral

5.9.5.2        

5.9.6   CUTANEOUS BRANCHES

5.9.6.1        

5.9.6.1.1    

5.9.6.2        

5.9.6.2.1   .

5.9.7   ARTICULAR BRANCHES

5.9.7.1        

5.9.7.1.1    

5.9.8   MUSCULAR BRANCHES

5.9.8.1        

5.9.8.2        

5.9.8.3        

5.9.8.4        

5.9.8.5        

5.9.8.6        

5.10 LOWR CER DOR RAM (C4-8)

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5.10.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.10.1.1   .

5.10.2            NUMBER

5.10.2.1   35

5.10.3            REFERENCE

5.10.3.1    

5.10.4            ROOTS

5.10.4.1    

5.10.4.2   Lumbar Plexus

5.10.4.3   VENTRAL

5.10.5            DIVISION

5.10.5.1   Dorsal Ventral

5.10.5.2    

5.10.6            CUTANEOUS BRANCHES

5.10.6.1    

5.10.6.1.1              

5.10.6.2    

5.10.6.2.1             .

5.10.7            ARTICULAR BRANCHES

5.10.7.1    

5.10.7.1.1              

5.10.8            MUSCULAR BRANCHES

5.10.8.1    

5.10.8.2    

5.10.8.3    

5.10.8.4    

5.10.8.5    

5.10.8.6    

5.11 UPP THOR DOR RAM (T1-6)

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5.11.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.11.1.1   .

5.11.2            NUMBER

5.11.2.1   35

5.11.3            REFERENCE

5.11.3.1    

5.11.4            ROOTS

5.11.4.1    

5.11.4.2   Lumbar Plexus

5.11.4.3   VENTRAL

5.11.5            DIVISION

5.11.5.1   Dorsal Ventral

5.11.5.2    

5.11.6            CUTANEOUS BRANCHES

5.11.6.1    

5.11.6.1.1              

5.11.6.2    

5.11.6.2.1             .

5.11.7            ARTICULAR BRANCHES

5.11.7.1    

5.11.7.1.1              

5.11.8            MUSCULAR BRANCHES

5.11.8.1    

5.11.8.2    

5.11.8.3    

5.11.8.4    

5.11.8.5    

5.11.8.6    

5.12 LOWR THOR DOR RAM (T7-12)

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5.12.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.12.1.1   .

5.12.2            NUMBER

5.12.2.1   35

5.12.3            REFERENCE

5.12.3.1    

5.12.4            ROOTS

5.12.4.1    

5.12.4.2   Lumbar Plexus

5.12.4.3   VENTRAL

5.12.5            DIVISION

5.12.5.1   Dorsal Ventral

5.12.5.2    

5.12.6            CUTANEOUS BRANCHES

5.12.6.1    

5.12.6.1.1              

5.12.6.2    

5.12.6.2.1             .

5.12.7            ARTICULAR BRANCHES

5.12.7.1    

5.12.7.1.1              

5.12.8            MUSCULAR BRANCHES

5.12.8.1    

5.12.8.2    

5.12.8.3    

5.12.8.4    

5.12.8.5    

5.12.8.6    

5.13 LUMBAR DOR RAM (L1-5)

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5.13.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.13.1.1   .

5.13.2            NUMBER

5.13.2.1   35

5.13.3            REFERENCE

5.13.3.1    

5.13.4            ROOTS

5.13.4.1    

5.13.4.2   Lumbar Plexus

5.13.4.3   VENTRAL

5.13.5            DIVISION

5.13.5.1   Dorsal Ventral

5.13.5.2    

5.13.6            CUTANEOUS BRANCHES

5.13.6.1    

5.13.6.1.1              

5.13.6.2    

5.13.6.2.1             .

5.13.7            ARTICULAR BRANCHES

5.13.7.1    

5.13.7.1.1              

5.13.8            MUSCULAR BRANCHES

5.13.8.1    

5.13.8.2    

5.13.8.3    

5.13.8.4    

5.13.8.5    

5.13.8.6    

5.14 UPPER SACRAL DOR RAM (S1-3)

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5.14.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.14.1.1   .

5.14.2            NUMBER

5.14.2.1   35

5.14.3            REFERENCE

5.14.3.1    

5.14.4            ROOTS

5.14.4.1    

5.14.4.2   Lumbar Plexus

5.14.4.3   VENTRAL

5.14.5            DIVISION

5.14.5.1   Dorsal Ventral

5.14.5.2    

5.14.6            CUTANEOUS BRANCHES

5.14.6.1    

5.14.6.1.1              

5.14.6.2    

5.14.6.2.1             .

5.14.7            ARTICULAR BRANCHES

5.14.7.1    

5.14.7.1.1              

5.14.8            MUSCULAR BRANCHES

5.14.8.1    

5.14.8.2    

5.14.8.3    

5.14.8.4    

5.14.8.5    

5.14.8.6    

5.15 LWR SAC&COC DR R(ANOCOCCYGEAL N) (S4,5,C01)

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5.15.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.15.1.1   .

5.15.2            NUMBER

5.15.2.1   35

5.15.3            REFERENCE

5.15.3.1    

5.15.4            ROOTS

5.15.4.1    

5.15.4.2   Lumbar Plexus

5.15.4.3   VENTRAL

5.15.5            DIVISION

5.15.5.1   Dorsal Ventral

5.15.5.2    

5.15.6            CUTANEOUS BRANCHES

5.15.6.1    

5.15.6.1.1              

5.15.6.2    

5.15.6.2.1             .

5.15.7            ARTICULAR BRANCHES

5.15.7.1    

5.15.7.1.1              

5.15.8            MUSCULAR BRANCHES

5.15.8.1    

5.15.8.2    

5.15.8.3    

5.15.8.4    

5.15.8.5    

5.15.8.6    

5.16  

5.16.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.16.1.1   .

5.16.2            NUMBER

5.16.2.1   35

5.16.3            REFERENCE

5.16.3.1    

5.16.4            ROOTS

5.16.4.1    

5.16.4.2   Lumbar Plexus

5.16.4.3   VENTRAL

5.16.5            DIVISION

5.16.5.1   Dorsal Ventral

5.16.5.2    

5.16.6            CUTANEOUS BRANCHES

5.16.6.1    

5.16.6.1.1              

5.16.6.2    

5.16.6.2.1             .

5.16.7            ARTICULAR BRANCHES

5.16.7.1    

5.16.7.1.1              

5.16.8            MUSCULAR BRANCHES

5.16.8.1    

5.16.8.2    

5.16.8.3    

5.16.8.4    

5.16.8.5    

5.16.8.6    

5.17  

5.17.1            DESCRIPTION:  PATH, FUNCTION, LESIONS, CUTANEOUS AREA, AND ADDITIONAL COMMENTS

5.17.1.1   .

5.17.2            NUMBER

5.17.2.1   35

5.17.3            REFERENCE

5.17.3.1    

5.17.4            ROOTS

5.17.4.1    

5.17.4.2   Lumbar Plexus

5.17.4.3   VENTRAL

5.17.5            DIVISION

5.17.5.1   Dorsal Ventral

5.17.5.2    

5.17.6            CUTANEOUS BRANCHES

5.17.6.1    

5.17.6.1.1              

5.17.6.2    

5.17.6.2.1             .

5.17.7            ARTICULAR BRANCHES

5.17.7.1    

5.17.7.1.1              

5.17.8            MUSCULAR BRANCHES

5.17.8.1    

5.17.8.2    

5.17.8.3    

5.17.8.4    

5.17.8.5    

5.17.8.6