forearm muscles actions and innervations

Question 1

action of aconeus

Answer 1

accessory extension of the elbow, stabilize, abducts ulna in pronation

Question 2

innervation of aconeus

Answer 2

radial nerve (c6, c7, c8)

Question 3

action of pronator teres

Answer 3

pronation of the forearm at the radio ulnar joints

Question 4

innervation of pronator teres

Answer 4

median nerve c6 C7

Question 5

flexor carpi radials action

Answer 5

flexion and aBduction of the wrist, weak elbow flexion

Question 6

innervation of flexor carpi radialis:

Answer 6

median c6 C7

Question 7

action of flexor carpi ulnaris

Answer 7

flexion and aDDuction of the wrist joint, weak elbow flexion

Question 8

innervation of flexor carpi ulnaris

Answer 8

Ulnar nerve c7, C8

Question 9

action of palmaris longus

Answer 9

flexion of the wrist, resists shearing forces when gripping, weak flexion of the elbow

Question 10

innervation of palmaris longus

Answer 10

median nerve c7, c8

Question 11

action of flexor digitorum superficialis

Answer 11

flexion of proximal interphalangeal joints of digits 2-5 can also flex metacarpophalangeal joints of the same fingers and the wrist joint

Question 12

innervation of flexor digitorum profundus lateral half

Answer 12

anterior interosseous nerve (median C8, ti,

Question 13

innervation of flexor digitorum profundus medial half

Answer 13

ulnar c8, T1

Question 14

innervation of flexor digitorum superficialis

Answer 14

median nerve c7, c8, t1

Question 15

flexor digitorum profundus action

Answer 15

flexion of the distal interphalangeal joints of the digits 2-5, can als flex meta carpophalangeal joints of the same fingers and the wrist joint

Question 16

flexor pollicis longus action

Answer 16

flexion of interphalangeal joint of the thumb, can also flex metacarpophalangeal and carpometacarpal jointof the thumb, assist to flex the wrist (weak)

Question 17

innervation of flexor pollicis longus

Answer 17

anterior interosseous nerve (median) C8, t1

Question 18

pronator quadratus action

Answer 18

pronation of the forearm

Question 19

innervation of pronator quadratus

Answer 19

anterior interosseous nerve c8, t1

Question 20

brachioradialis action

Answer 20

accessory flexion of the elbow joint when forearm is midpronated; assist withpronation and supination of the forearm with resistance (weak)

Question 21

brachioradialis innervation

Answer 21

radial nerve (c5, C6, c7) before division into superficial and deep braches