Arm Muscles

Question 1

biceps brachii long head (origin)

anterior compartment

Answer 1

supraglenoid tubercle of scapula

Question 2

biceps brachii long head (insertion)

anterior compartment

Answer 2

tuberosity of radius and bicipital aponeurosis into deep fascia of forearm

Question 3

biceps brachii long head (nerve)

anterior compartment

Answer 3

musculocutaneous nerve

Question 4

biceps brachii long head (action)

Answer 4

supinator of forearm and flexor of elbow joint; weak flexor of shoulder joint

Question 5

biceps brachii short head (origin)

anterior compartment

Answer 5

coracoid process of scapula

Question 6

biceps brachii short head (insertion)

anterior compartment

Answer 6

tuberosity of radius and bicipital aponeurosis into deep fascia of forearm

Question 7

biceps brachii short head (nerve)

anterior compartment

Answer 7

musculocutaneous nerve

Question 8

biceps brachii short head (action)

anterior compartment

Answer 8

supinator of forearm and flexor of elbow joint

Question 9

coracobrachialis (origin)

anterior compartment

Answer 9

coracoid process of scapula

Question 10

coracobrachialis (insertion)

Answer 10

medial aspect of shaft of humerus

Question 11

coracobrachialis (nerve)

anterior compartment

Answer 11

musculocutaneous nerve

Question 12

coracobrachialis (action)

anterior compartment

Answer 12

flexes arm and also weak adductor

Question 13

brachialis (origin)

anterior compartment

Answer 13

front of lower half of humerus

Question 14

brachialis (insertion)

anterior compartment

Answer 14

coronoid process of ulna

Question 15

brachialis (nerve)

anterior compartment

Answer 15

musculocutaneous nerve

Question 16

brachialis (action)

anterior compartment

Answer 16

flexor of elbow joint

Question 17

triceps long head (origin)

posterior compartment

Answer 17

infraglenoid tubercle of scapula

Question 18

triceps long head (insertion)

posterior compartment

Answer 18

lower half of posterior surface of shaft of radius

Question 19

triceps long head (nerve)

posterior compartment

Answer 19

radial nerve

Question 20

triceps long head (action)

posterior compartment

Answer 20

extensor of elbow joint; shoulder extensor

Question 21

triceps lateral head (origin)

posterior compartment

Answer 21

upper half of posterior surface of shaft of humerus

Question 22

triceps lateral head (insertion)

posterior compartment

Answer 22

lower half of posterior surface of shaft of radius

Question 23

triceps lateral head (nerve)

posterior compartment

Answer 23

radial nerve

Question 24

triceps lateral head (action)

posterior compartment

Answer 24

extensor of elbow joint

Question 25

triceps medial head (origin)

posterior compartment

Answer 25

lower half of posterior surface of shaft of humerus

Question 26

triceps medial head (insertion)

Answer 26

lower half of posterior surface of shaft of radius

Question 27

triceps medial head (nerve)

Answer 27

radial nerve

Question 28

triceps medial head (action)

Answer 28

extensor of elbow joint