Unit 2 - Upper Limb: Identifying Nerves of Brachial Plexus (Ex. II)

Question 1

posterior interosseous nerve

Answer 1

branch from deep radial nerve
pops out from under supinator
continues down between EPL and EPB

Question 2

median nerve

Answer 2

runs through cubital fossa
continues between FDS and FDP
eventually goes through carpal tunnel

Question 3

anterior antebrachial interosseous nerve

Answer 3

branches off median nerve

runs L to FDP as median nerve continues to carpal tunnel

Question 4

ulnar nerve

Answer 4

runs under FCU w/ ulnar artery through Guyon’s tunnel

Question 5

radial nerve

Answer 5

deep to brachioradialis
just distal to cubital fossa
gives off deep branch to supinator - emerges as P interosseous branch
superficial branch continues under brachioradialis and then dorsal digital nerves