Nerve Anatomy

Question 1

Lateral Femoral Cutaneous Nerve

Answer 1

L2-4

motor: none
sensory: lateral thigh

Question 2

Femoral Nerve

Answer 2

largest of lumbar, L2-4
posterior branch gives rise to saphenour
motor: anterior --> sartorious
            posterior --> quadriceps
sensory: anterior thigh

Question 3

Obturator Nerve

Answer 3

L2-4
Can be injured with extensive pelvic surgery
motor: hip adductors
sensory: distal inner thigh, part of hip

Question 4

Sciatic Nerve

Answer 4

L4-S3
largest nerve in body
motor: posterior thigh, and much of posterior leg
sensory: lower leg
branches to tibial and common peroneal

Question 5

Posterior Femoral Cutaneous

Answer 5

S1-3
motor:
sensory: posterior thigh

Question 6

Axillary

Answer 6

sensory: lateral aspect of shoulder
motor: arm abduction

Question 7

Musculocutaneous

Answer 7

sensory: lateral forearm
motor: elbow flexion

Question 8

Median

Answer 8

sensory: index and middle finger, palmar
motor: thumb opposition

Question 9

Radial

Answer 9

sensory: biceps down forearm to thumb
motor: elbow extension, wrist and finger extension

Question 10

Ulnar

Answer 10

sensory: pinky finger
motor: pinky finger abduction