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Ulna Bone Anatomy Animation

The ulna, a crucial long bone in the forearm, possesses intricate anatomical features that contribute significantly to upper limb function. At its proximal end, the ulna exhibits the olecranon process, forming the elbow's prominent point and articulating with the olecranon fossa of the humerus to facilitate forearm extension, while just below, the coronoid process interfaces with the coronoid fossa of the humerus, allowing for forearm flexion. The shaft, extending between these processes, provides attachment sites for vital muscles like the triceps brachii and flexor carpi ulnaris, essential for controlling elbow and wrist movements. The distal end of the ulna boasts the ulnar head, which articulates with the radius and carpal bones, enabling crucial rotational movements of the forearm (pronation and supination) and contributing to wrist joint stability. The ulna's distal tip, characterized by the styloid process, reinforces wrist joint stability by anchoring essential ligaments.

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