Biceps brachii muscle

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The biceps brachii muscle (biceps) is a muscle of the upper arm whose main function is to supinate (turn inward) the forearm.

The biceps connects the scapula (shoulder blade) to both bones of the forearm - the radius and ulna. It is divided into two heads - the long head and the short head, which originate at different points on the scapula, then join together to form a single muscle.

Origin

The origin of the biceps is the supraglenoid tubercle of the scapula for the long head and the coracoid process of the scapula for the short head.

Insertion

The insertion point of the biceps is the posterior border of bicipital tuberosity of the radius and the bicipital aponeurosis of the ulna.

See also

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