what is a two-headed muscle that lies on the upper arm
Dr. Ebraheimâs educational animated video describes the anatomy of the biceps brachii muscle with simple images. The Biceps Brachii is a two-headed muscle that lies on the upper arm between the shoulder and the elbow. The long head of the biceps tendon arises from the supraglenoid tubercle. The biceps tendon is intra-articular.