The olecranon process of the ulna and olecranon fossa of the humerus also play an important role in locomotion. Specifically, the length of the olecranon process and depth of the olecranon fossa vary with locomotor behavior. Identify the olecranon process and olecranon fossa on each ulna and humerus. How does the length of the olecranon process differ between the suspensory and quadrupedal primates (2 pts.)?