Upper limb 4 Flashcards Preview

MSK - anatomy - ABDN > Upper limb 4 > Flashcards

Flashcards in Upper limb 4 Deck (19):
1

where are the wrist extensor muscles located

the posterior compartment of the forearm

2

name the muscles that extend the wrist

extensor carpi radialis longus, extensor carpi radialis brevis and extenosr carpi ulnaris

3

name the extensor muscles that adduct the wrist

extensor carpi ulnaris

4

name the extensor muscles that abduct the wrist

extensor carpi radialis longus and brevis

5

name the muscles that extend the fingers

extensor digitorum, extensor digiti minima and the extensor indicis

6

where does the extensor digitorum arise from

the lateral epicondyle of the humerus

7

what extensor tendons insert onto the 4 digits

the entensor digitorum tendons

8

what can you do to the hand to see the extensor digitorum tendons on the fingers

abduct the fingers

9

what nerve goes past the lateral epicondyle

the radial nerve

10

name the branches of the radial nerve

the superficial and the deep branches

11

what is the role of the superficial radial nerve

to innervate the majority of the skin over the dorsal of the hand

12

what is the role of the deep branch the radial nerve

to innervate the posterior muscles of the arm and the forearm

13

name the extensor muscles of the thumb

abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus

14

what muscles abducts the thumb

abductor pollicis longus

15

what its he anatomical snuff box

this is. shallow depression that exists on the lateral aspect of the thumb when it is fully extended

16

name the carpal bones that are present in the anatomical snuff box

the scaphoid and the trapezium

17

which artery lies on the floor of the anatomical snuff box

the radial artery

18

what type of joint is the first carpal-metacarpal joint

synovial saddle

19

what are extensor expansions

these are connective tissue bands that are used to attach the tendons of the extensor digitorum onto the proximal phalangeal bones