Pelvic Nerve Innervations

Question 1

obturator N

Answer 1

adductor Mm (pectineus, gracilis, adductor), external obturator M

Question 2

femoral N

Answer 2

sartorius M, ilopsoas M, all 4 heads of the quadriceps (the action of the femoral nerve is extend the stifle)

Question 3

saphenous N (branch of the femoral N)

Answer 3

sartorius M (cutaneous portion innervates skin on medial side from thigh distally)

Question 4

caudal rectal N

Answer 4

external anal sphincter

Question 5

perineal Nn

Answer 5

skin of anus, perineum, muscles of the penis or vestibule and vulva

Question 6

dorsal nerve of penis/clitoris

Answer 6

sensory to skin of the glans

Question 7

caudal cutaneous femoral N

Answer 7

skin on proximal caudal half of the thigh

Question 8

caudal gluteal N

Answer 8

superficial gluteal M

Question 9

cranial gluteal N

Answer 9

middle and deep gluteal Mm, tensor fasciae latae M

Question 10

lateral cutaneous sural N

Answer 10

skin of the crus

Question 11

caudal cutaneous sural N

Answer 11

skin of the crus

Question 12

superficial fibular N

Answer 12

flexor muscles of the tarsus and extensor muscles of the digits (includes cranial tibial, fibularis longus, long digital extensor)

Question 13

deep fibular N

Answer 13

flexor muscles of the tarsus and extensor muscles of the digits (includes cranial tibial, fibularis longus, long digital extensor)

Question 14

tibial N

Answer 14

muscles caudal to the fibula and tibia (extensors of tarsus and flexors of the digits), gastrocnemius M, superficial digital flexor M