Muscles Of Anterior Compartment Of Arm

Question 1

Biceps brachii

Answer 1

O- Long head-supraglenoid tubercle
Short head-coracoid process
I- radial tuberosity
N- Musculocutaneous nerve
Action-supination of forearm and flexion of supinated forearm

Question 2

Brachialis

Answer 2

O-distal half of the anterior surface of humerus
I-ulnar tuberosity
N-musculocutaneous nerve
A-flexes forearm in all positions

Question 3

Coracobrachialis

Answer 3

O-coracoid process
I-medial half of the humerus
N-musculocutaneous
A-flex and adduct the arm

Ps. Small muscle pierced by mc nerve