Pictured above are the biceps muscles. Both of them pull your lower arm toward your shoulder. The biceps brachii rotates your lower arm as it flexes your elbow. The deeper of the two biceps muscles (the brachialis) is responsible for 'true flexion' of your elbow, and is involved in EVERY action you do that requires your elbow joint.
The muscles are layered, showing how some of the muscles are covered by the others. All of the muscles are see-through so that you can appreciate the location and size of each muscle relative to the others.
Click here for a list of all the muscles.
The following muscles cross the elbow joint and attach to the shoulder blade (scapula) & the arm (radius or ulna), to the upper arm (humerus) & the arm (radius or ulna). Click the appropriate link for your interest.
Arm muscles that cross the elbow joint and flex the arm:
Good luck working out those tight knots.
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