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Biceps Brachii Muscle

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Last updated: Sep 17th, 2025
Biceps Brachii Muscle
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The biceps brachii muscle of upper arm counts itself among those muscles that have more than one origin (immovable end) or insertion (movable end). This is shown in its name, biceps, which means two heads. It is attached to the scapula (shoulder blade) in two places and extends along the front surface of the humerus (upper arm bone). It is inserted by means of a tendon on the largest part of the radius (lower arm bone). When it contracts, the movable end is pulled toward the origin, and the arm bends at the elbow.