Muscle Anatomy


The biceps brachii, a prominent muscle in the upper arm, consists of two heads, creating a distinctive bulge. It is a key player in forearm movements.

The long head originates from the supraglenoid tubercle of the scapula, while the short head arises from the coracoid process of the scapula. Both heads unite to form the muscle belly.

The biceps brachii inserts via the common tendon into the radial tuberosity, allowing it to exert its force on the radius.

The primary function of the biceps brachii is flexion at the elbow joint, bringing the forearm toward the upper arm. Additionally, it plays a role in supination, rotating the forearm to a palm-up position. As a powerful flexor, it is actively involved in various daily activities, from lifting objects to executing controlled movements.