Arm: Anterior Compartment

Question 1

Muscles of the anterior compartment of the arm

Answer 1

Biceps brachii (short head, long head)
Coracobrachialis
Brachialis

Question 2

Innervation of the anterior compartment of the arm

Answer 2

Musculocutaneous nerve

Question 3

Action of the anterior compartment of the arm

Answer 3

Flexion of forearm (biceps brachii, brachialis)
Flexion of arm (biceps brachii, coracobrachialis)
Adduction of the arm (coracobrachialis)
Suppination of forearm (biceps brachii)

Question 4

What causes popeye sign?

Answer 4

Rupture of the long head of the biceps tendon