Arm Functions

Question 1

flexes the wrist and middle phalanges

Answer 1

flexor digitorum superficialis

Question 2

pronates the forearm

Answer 2

pronators teres and quadratus

Question 3

flexes the distal interphalangeal joints

Answer 3

flexor digitorum profundus

Question 4

two powerful wrist flexors

Answer 4

flexor pollicis longus and brevis
flexor carpi ulnaris

Question 5

thumb flexors

Answer 5

flexor pollicis longus and brevis

Question 6

extend and abduct wrist

Answer 6

extensor carpi radialis longus and brevis

Question 7

prime mover of finger extension

Answer 7

extensor digitorum

Question 8

extends the thumb

Answer 8

extensor pollicis longus and brevis

Question 9

small muscle that provides a guide to locate the median nerve at the wrist

Answer 9

palmaris longus

Question 10

wrist flexor that follows ulna

Answer 10

flexor carpi ulnaris

Question 11

the muscle that extends the fingers

Answer 11

extensor digitorum

Question 12

supinates the elbow flexor muscles

Answer 12

bicep brachii

Question 13

synergist of elbow

Answer 13

brachioradialis

Question 14

muscle that extends the elbow; prime mover

Answer 14

triceps brachii

Question 15

short muscle that is a synergist of the triceps brachii

Answer 15

anconeus

Question 16

stocky muscle, deep to the biceps brachii; prime mover of elbow extension

Answer 16

brachialis

Question 17

two wrist extensors that follow the radius

Answer 17

ext carpi radialis longus
extensor carpi radialis brevis

Question 18

muscle that abducts the thumb

Answer 18

abductor pollicis longus

Question 19

muscle that extends the thumb

Answer 19

ext pollicis brevis

Question 20

powerful shoulder abductor; used to raise the arm overhead

Answer 20

deltoid