Biceps muscle: • The biceps or biceps brachii (Latin: musculus biceps brachii, "two-headed muscle of the arm") is a large muscle that lies on the front of the upper arm between the shoulder and the elbow. • It derives its name from its two heads which merge in one unique distal body • Both heads of the muscle arise on the scapula and join to form a single muscle belly which is attached to the upper forearm. • The biceps brachii muscle is one of the chief muscles of the arm. Diagram: Origin: Short head - Apex of the Coracoid process of the scapula Long head - Supraglenoid tubercle of the scapula Insertion: Radial tuberosity of the radius Deep fascia of forearm (insertion of the bicipital aponeurosis) Nerve: Musculocutaneous nerve (C5- C6) - brachial plexus Blood supply: brachial artery Functions: The biceps is a two-joint muscle. In the shoulder joint it involves abduction, inward rotation adduction & flexion. In the elbow joint the muscle involve in flexion and supination. The supination is most powerful in a flexed elbow. In addition to the movement functions, the biceps has the important task to support the humeral head within the shoulder joint.