Muscles Of Upper Arm/ Posterior Forearm

Question 1

where are flexors of wrist, fingers, elbow and shoulder located?

Answer 1

anterior

Question 2

where are extensors located

Answer 2

posterior

Question 3

name the elbow flexors

Answer 3

biceps brachii
brachialis
brachioradialis

Question 4

why are there 3 elbow flexors?

Answer 4

to ensure the elbow can be flexed efficiently regardless of the degree of pronation or supination of forearm

Question 5

which degree of pronation/supination do each elbow flexor works best?

Answer 5

biceps brachii = supination
brachialis = pronation
brachioradialis = half way

Question 6

which muscles extend the elbow?

Answer 6

the lateral, medial and long head of the triceps

Question 7

where is the origin of the long head of triceps? why?

Answer 7

scapula. allow extension behind the body

Question 8

which layer are muscles that affect the wrist located?

Answer 8

superficial

Question 9

name the muscles that extend the wrist

Answer 9

extensor carpi ulnar

extensor carpi radialis

Question 10

which muscles are located in the mid layer of the posterior compartment of the forearm?

Answer 10

extensor digitorum

extensor digiti minimi

Question 11

which muscles are located in the deep layer of the posterior compartment of the forearm?

Answer 11

abductor pollicis longus
extensor pollicis, longus & brevis
extensor indicis