The biceps muscle has 2 parts, the long head and the short head. The long head of biceps tendon arises from the top of the socket (glenoid) and passes within the joint exiting fromthe joint in the biceps groove and travels down to the biceps muscles (Fig. 1 and 2.)
This tendon moves up and down in the joint and the groove when the shoulder is moved and is a common site of pathology. The short head of biceps tendon arises from the coracoid bone on the shoulder blade (scapula).
The biceps muscles attached to the radius in the forearm(conditions of that part of the biceps are discussed under the elbow section).