Muscles of the arm

Question 1

Origin of Biceps Brachii

Answer 1

Long head: Supraglenoid tubercle of scapula
Short head: Tip of coracoid process of scapula

Question 2

Insertion of Biceps Brachii

Answer 2

Tuberosity of radius

Question 3

Action of Biceps Brachii

Answer 3

Flexes forarm, supinates

Question 4

Origin of Triceps Brachii

Answer 4

Long head: Infraglenoid tubercle of scapula
Lateral head: posterolateral humerus and lateral intermuscular septum
Medial head: Posteromedial surface of inferior 1/2 of humerus

Question 5

Insertion of Triceps Brachii

Answer 5

Olecranon process of ulna

Question 6

Action of Triceps Brachii

Answer 6

Extends forearm ; long head extends and adducts arm

Question 7

Origin of Coracobrachialis

Answer 7

Coracoid process of scapula

Question 8

Insertion of Coracobrachialis

Answer 8

Medial side of humerus mid shaft

Question 9

Action of Coracobrachialis

Answer 9

Flexes and adducts the arm