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The biceps is a muscle in the upper arm with two heads, called the short head and the long head, which converge into a single mass. It is one of the three muscles in the anterior compartment of the arm, the others being the brachialis muscle and the coracobrachialis muscle, with which the biceps shares a nerve supply.
Biceps Brachii Anatomy Study. Origin: Long head: supraglenoid tubercle and the superior portion of the glenoid labrum. Short head: lateral aspect of the apex of the coracoid process of the scapula. Insertion: Radial tuberosity and the bicipital aponeurosis.