muscles that act on the forearm

Question 1

origin of biceps brachii

Answer 1

long head:
supraglenoid tubercle of scapula
Short head:
coroacoid process of scapula

Question 2

insertion of biceps brachii

Answer 2

radial tuberosity of radius and bicipital aponeurosis

Question 3

action of biceps brachii

Answer 3

flexes elbow joint, supinator of forearm at elbow joint

Question 4

origin of triceps brachii

Answer 4

long head: infraglenoid tubercle of scapula
lateral head: above radial groove of humerous
medial head: below radial groove of humerus

Question 5

insertion of triceps brachii

Answer 5

olecranon of ulna

Question 6

action of triceps brachii

Answer 6

extends elbow joint; long head extends and adducts arm

Question 7

origin of brachialis

Answer 7

distal anterior surface of humerus

Question 8

insertion of brachialis

Answer 8

tuberosity and coronoid process

Question 9

action of brachialis

Answer 9

primary flexor of forearm