Definition of "ulna" noun: the inner and longer of the two bones of the human forearm

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	WikiPedia definition of "ulna" The ulna (elbow bone) is a long bone, prismatic in form, placed at the medial side of the forearm, parallel with the radius. (More) In human anatomy, the ulnar nerve is a nerve which runs near the ulna bone. The ulnar nerve is the largest unprotected nerve in the human body (meaning, unprotected by muscle or ... (More) The upper extremity of the ulna (or proximal extremity) presents two curved processes, the olecranon and the coronoid process; and two concave, articular cavities, the semilunar ... (More) The coronoid process is a triangular eminence projecting forward from the upper and front part of the ulna. Its base is continuous with the body of the bone, and of considerable ... (More) The radius is the bone of the forearm that extends from the lateral side of the elbow to the thumb side of the wrist. The radius is situated on the lateral side of the ulna, which ... (More) At the junction of the antero-inferior surface of the coronoid process with the front of the body is a rough eminence, the tuberosity of the ulna (or ulnar tuberosity), which gives ... (More) The body of the ulna at its upper part is prismatic in form, and curved so as to be convex behind and lateralward; its central part is straight; its lower part is rounded, smooth ... (More) The head of ulna presents an articular surface, part of which, of an oval or semilunar form, is directed downward, and articulates with the upper surface of the triangular ... (More) The lower extremity of the ulna (or distal extremity) is small, and presents two eminences; the lateral and larger is a rounded, articular eminence, termed the head of the ulna ... (More) The ulna is ossified from three centers: one each for the body, the inferior extremity, and the top of the olecranon. Ossification begins near the middle of the body, about the ... (More)

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