Biceps muscles: anatomy :

A muscle group in the anterior part of the arm, the biceps are made up of three main muscles: the biceps brachial, the brachial, and the coracobrachial.

- The biceps brachial muscle extends from the scapula to the radius. Composed of two leaders (short and long), it allows the bending of the elbow and the rotation of the forearm. It is a superficial muscle that forms the curve of the arm. It is this muscle that men must work on to obtain "large biceps".

- The brachial muscle extends from the arm (ulna) to the forearm (radius). It is located under the biceps brachial, on the lower part of the arm, and acts during the bending of the elbow.
- The coracobrachial muscle extends from the scapula (shoulder blade) to the humerus (arm bone). It acts during the elevation and adduction of the arm.