The Structure of the Biceps
The biceps brachii is a muscle located at the front of the arm. It consists of two distinct muscle heads, the long head and the short head, which come together to form a common tendon at the upper end of the muscle.
It enables the flexion of the forearm on the arm, as well as supination (a rotational movement of the forearm that turns the palm of the hand upward).
- The long head of the biceps originates from the glenoid cavity of the scapula and crosses the shoulder joint. It is more recruited when the arm is close or behind the torso.
- The short head of the biceps originates from the coracoid, a small projection of the scapula near the shoulder joint. It is more recruited when the arm is in front of the body.
Both muscle heads run parallel along the arm to end in the biceps tendon. This tendon attaches to the bicipital tubercle of the radius, a bone in the forearm located just below the elbow joint.
Video illustration
Main exercises
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