Spinal Nerves

Question 1

Phrenic Nerve

Answer 1

innervates diaphragm

Question 2

Brachial Plexus

Answer 2

lateral cord: musculocutaneous nerve & median nerve
medial cord: ulnar nerve & median nerve
posterior cord: axillary nerve & radial nerve

Question 3

Musculocutaneous Nerve

Answer 3

motor: anterior arm muscles
sensory: lateral forearm

Question 4

Median Nerve

Answer 4

motor: anterior forearm muscles except medial muscles
sensory: lateral 2/3 of hand on ventral side, dorsum of fingers 2 & 3

Question 5

Ulnar Nerve

Answer 5

motor: flexor carpi ulnaris, medial half of digitorum profundus
sensory: medial 1/3 of hand anterior and posterior

Question 6

Axillary Nerve

Answer 6

motor: deltoid and teres minor
sensory: shoulder joint and skin over part of deltoid

Question 7

Radial Nerve

Answer 7

motor: posterior arm and forearm muscles
sensory: posterolateral arm and forearm except dorsum of fingers 2 & 3

Question 8

Lumbar Plexus

Answer 8

femoral nerve and obturator nerve

Question 9

Femoral Nerve

Answer 9

motor: anterior thigh muscles
sensory: anterior and medial thigh, hip and knee joints, skin of medial leg and foot

Question 10

Obturator Nerve

Answer 10

motor: medial thigh muscles
sensory: medial thigh, skin over knee and hip joints

Question 11

Sacral Plexus

Answer 11

Sciatic Nerve, splits into tibial nerve and common fibular nerve

Question 12

Tibial Nerve

Answer 12

motor: posterior thigh and leg muscles
sensory: posterior leg and sole of foot

Question 13

Common Fibular Nerve

Answer 13

motor: short head of the biceps femoris, anterior and lateral leg muscles
sensory: skin of anterior and lateral surface of leg, dorsum of foot