Upper Limb - Station 4

Question 1

two muscles tendons that bound the anatomical snuff box laterally

Answer 1

abductor pollicis longus and extensor pollicis brevis

Question 2

muscle tendon that is the medial border of the anatomical snuff box

Answer 2

extensor pollicis longus

Question 3

two carpal bones in the floor of the snuff box

Answer 3

scaphoid and trapezium

Question 4

artery on the floor of snuff box

Answer 4

radial artery

Question 5

what nerve innervates the extensor pollicis brevis and longus and abductor pollicis longus

Answer 5

posterior interosseus nerve (radial)

Question 6

which extensor pollicis doesn’t act on the IP joint of the thimb

Answer 6

extensor pollicis brevis

Question 7

action of extensor pollicises and APL on the CMC joints

Answer 7

extension