What does the olecranon form in the human body?

The olecranon is a prominent bony projection located at the proximal end of the ulna, one of the two long bones in the forearm. It specifically forms the pointed tip of the elbow, which serves as an important anatomical landmark. The olecranon provides structure and stability to the elbow joint, allowing for flexion and extension movements of the arm. When the arm is extended, the olecranon fits into the corresponding notch of the humerus, effectively connecting the upper and lower parts of the arm at the elbow.

Understanding the olecranon's role emphasizes its significance in the functioning of the elbow, which is essential for many daily activities involving the use of the arms.