Muscles Of Anterior Compartment Of Arm

Question 1

Biceps Brachii Origin

Answer 1

Short Head: Tip of Coracoid process of scapula
Long Head: Supraglenoid tubercle of scapula

Question 2

Biceps Brachii Insertion

Answer 2

Tuberosity of radius & fascia of forearm via bicipital aponeurosis

Question 3

Biceps Brachii Innervation

Answer 3

Musculocutaneous Nerve (C5,C6, C7)

Question 4

Biceps Brachii Action

Answer 4

Supinates forearm
Flexes Forearm when supinated
Short Head resists dislocation of shoulder

Question 5

Coracobrachialis Origin

Answer 5

Tip of coracoid process of scapula

Question 6

Coracobrachialis Insertion

Answer 6

Middle 1/3 of medial surface of humerus

Question 7

Coracobrachialis Innervation

Answer 7

Musculocutaneous Nerve (C5,C6,C7)

Question 8

Coracobrachialis Action

Answer 8

Helps flex and adduct arm
Resists dislocation of shoulder

Question 9

Brachialis Origin

Answer 9

Distal half of anterior surface of humerus

Question 10

Brachialis Insertion

Answer 10

Coronoid process and ulnar tuberosity

Question 11

Brachialis Innervation

Answer 11

Musculocutaneous Nerve (C5,C6)
Radial Nerve (C5,C7)

Question 12

Brachialis Action

Answer 12

Flexes forearm in all positions