Upper Limb 4 - Station 2

Question 1

course of radial nerve

Answer 1

enters cubital fossa between brachioradialis and brachialis, passes anterior to the lateral epicondyle and then divides into the superficial and deep branches

Question 2

course of deep radial nerve

Answer 2

exits cubital fossa around neck of radius then emerges into the posterior compartment as posterior interosseus nerve

Question 3

what nerve is the posterior interosseus a branch of

Answer 3

deep radial nerve

Question 4

muscles innervated by deep branch of radial nerve

Answer 4

extensor carpi radialis brevis supinator

Question 5

muscles innervated by posterior interosseus nerve

Answer 5

extensor digitorum, digiti minimi and carpi ulnaris

abductor pollicis longus, extensor pollicis brevis and longus and extensor indicis

Question 6

muscles innervated by just the radial nerve directly

Answer 6

brachioradialis and extensor carpi radialis longus

Question 7

what nerve supplies the supinator muscles

Answer 7

deep branch of radial nerve

Question 8

describe the proximal attachment of the supinator to the radius

Answer 8

envelops neck and proximal part of shaft of radius covering it completely expect from the medial side

Question 9

where does the radial nerve divide into superficial and deep branches

Answer 9

cubital fossa

Question 10

what part of the radial nerve supplies cutaneous sensation to the hand

Answer 10

superficial