| The muscle may be divided, with the second belly attached distally to the radius, or even the ulna. |
| The first layer is composed of four muscles that arise partly from the medial epicondyle of the humerus and partly from the ulna. |
| Although poorly represented, other skeletal elements include nine pelvis fragments, two ulna fragments, three atlases, and a few rib fragments. |
| Superior to the trochlea is another anterior depression called the coronoid fossa which receives part of the ulna when flexed. |
| When the ulna is shorter than the radius, the lunate bone absorbs more force when the wrist is used for heavy gripping activities. |
| It passes through the capitulum of the radius and the ulna and its coronoid process and radial notch. |
