Actions of the Arm Muscles

Question 1

Deltoid

Answer 1

Front draws forwards
Middle abducts the arm
Back draws arm backwards

Question 2

Biceps Brachii

Answer 2

Flex elbow, supinates forearm

Question 3

Brachioradialis

Answer 3

Flex elbow

Question 4

Triceps brachii

Answer 4

Extends elbow

Question 5

Supinator

Answer 5

Supinates forearm and hand

Question 6

Extensor Digitorum

Answer 6

Extends wrist and fingers

Question 7

Extensor carpri radialis brevis and longus

Answer 7

Extends and abducts wrist

Question 8

Extensor capri ulnaris

Answer 8

Extends wrist

Question 9

Flexor carpi radialis

Answer 9

Flexes wrist

Question 10

Flexor Carpi ulnaris

Answer 10

Flexes wrist

Question 11

Caracobrachialis

Answer 11

Adducts and flexes the arm, horizontally adducts the shoulder