The biceps brachii muscle is one of three muscles of the anterior compartment of the arm (coracobrachialias and brachialis are the other two)

Origin

Short head: coracoid process

Long head: supraglenoid tubercle

Insertion

Radial tuberosity and bicipital aponeurosis

Action

Elbow: flexion

Shoulder: flexion and abduction

Forearm: supination

Innervation

Musculocutaneous nerve

Blood Supply

Brachial artery

Antagonist

Triceps brachii