Nervous System Flashcards
Femoral n. inervates
cranial thigh mm.
Obturator n. innervates
medial thigh mm.
Gluteal nn. innervate
rump mm.
cranial gluteal n. innervates
middle & deep gluteal mm.
caudal gluteal n. innervates
superficial gluteal m.
Sciatic n. innervates
caudal thigh
and by extension craniolateral crus and caudal crus mm.
Common peroneal n. innervates
craniolateral crus mm.
tibial n. innervates
caudal crus mm.
femoral n. segments
L4, L5, L6
sciatic n. segments
L6, L7, S1, S2
Pudendal n. segments
S1, S2, S3
Lumbosacral Plexus
L4-S2
Autonomous zone for femoral n. (via saphenous n.)
Medial aspect limb (mid thigh to mid pes)
autonomous zone for tibial n.
plantar pes, caudal crus
autonomous zone for common peroneal n.
craniolateral crus & dorsal pes
autonomous zone for genitofemoral n.
medial thigh
autonomous zone for lateral cutaneous femoral n.
cranial, lateral thigh
autonomous zone for caudal cutaneous femoral n.
caudal, lateral thigh
autonomous zone for pudendal nn.
perineum and external genetalia
What happens if you cut the sciatic n. mid-thigh?
lose extension and flexion of tarsal joints
Radial n. segments from
C7, C8, T1, T2
Musculocutaneous n. innervates
cranial arm group
elbow flexors
Axillary n. innervates
some lateral & medial mm. of shoulder
flexors of shoulder jt
Radial n. innervates
caudal arm gp. and craniolateral antebrachial gp.
extensors of elbow, carpal, & digital jts
Median & Ulnar nn. innervate
caudomedial antebrachial gp
flexors of carpal & digital jts
suprascapular n. innervates
supraspinatus & infraspinatus mm.
subscapular n. innervates
subscapularis m.
Thoracodorsal n. innervates
latissimus dorsi m.
autonomous zone for radial n
craniolateral forearm & digits 1-4
autonomous zone for ulnar n.
caudomedial antebrachial and 5th digit
autonomous zone for musculocutaneous n.
medial arm