Bodybuilding anatomy. Biceps

As its name suggests, the biceps muscle has two heads. The short head attaches to the coracoid process, and the long head arises from above the glenoid of the shoulder joint. The two-headed muscle passes down alongside the humerus and attaches about 1.5 inches (4 cm) below the elbow joint onto a tuberosity on the inside of the radius bone.

The biceps causes flexion at the elbow joint, raising the hand toward the face. The biceps also causes supination of the forearm, rotating the hand so the palm faces uppermost, the" get change" position. In addition to the biceps, two other muscles flex (bend) the elbow: the brachialis and brachioradialis. The brachialis muscle lies deep beneath the biceps, arising from the lower half of the humerus and attaching to the ulna bone just below the elbow joint.  the brachialis lifts the ulna at the same time that the biceps lifts the radius.


The brachioradialis muscle arises from the outer aspect of the lower end of the humerus and then travels down the forearm to attach to the radius just above the wrist joint.