Upper limb 4

Question 1

where are the wrist extensor muscles located

Answer 1

the posterior compartment of the forearm

Question 2

name the muscles that extend the wrist

Answer 2

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

Question 3

name the extensor muscles that adduct the wrist

Answer 3

extensor carpi ulnaris

Question 4

name the extensor muscles that abduct the wrist

Answer 4

extensor carpi radialis longus and brevis

Question 5

name the muscles that extend the fingers

Answer 5

extensor digitorum, extensor digiti minima and the extensor indicis

Question 6

where does the extensor digitorum arise from

Answer 6

the lateral epicondyle of the humerus

Question 7

what extensor tendons insert onto the 4 digits

Answer 7

the entensor digitorum tendons

Question 8

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

Answer 8

abduct the fingers

Question 9

what nerve goes past the lateral epicondyle

Answer 9

the radial nerve

Question 10

name the branches of the radial nerve

Answer 10

the superficial and the deep branches

Question 11

what is the role of the superficial radial nerve

Answer 11

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

Question 12

what is the role of the deep branch the radial nerve

Answer 12

to innervate the posterior muscles of the arm and the forearm

Question 13

name the extensor muscles of the thumb

Answer 13

abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus

Question 14

what muscles abducts the thumb

Answer 14

abductor pollicis longus

Question 15

what its he anatomical snuff box

Answer 15

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

Question 16

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

Answer 16

the scaphoid and the trapezium

Question 17

which artery lies on the floor of the anatomical snuff box

Answer 17

the radial artery

Question 18

what type of joint is the first carpal-metacarpal joint

Answer 18

synovial saddle

Question 19

what are extensor expansions

Answer 19

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