Where in the human body is the ulna?
Ulna articular cavities, the semilunar and radial notches. The olecranon is a large, thick, curved eminence, situated at the upper and back part of the ulna. It is bent forward at the summit so as to present a prominent lip which is received into the olecranon fossa of the humerus in extension of the forearm. Its base is contracted where it joins the body and the narrowest part of the upper end of the ulna. Its posterior surface, directed backward, is triangular, smooth, subcutaneous, and covered by a bursa. Its superior surface is of quadrilateral form, marked behind by a rough
Coronoid process of the ulna of the flexor digitorum profundus muscle; descending from the eminence is a ridge which gives origin to one head of the pronator teres muscle. Frequently, the flexor pollicis longus muscle arises from the lower part of the coronoid process by a rounded bundle of muscular fibers. The coronoid process of the ulna should not be confused with the similar-sounding coracoid process of the scapula. Coronoid process of the ulna The Ulna's coronoid process is a triangular eminence projecting forward from the anterior proximal portion of the ulna. Its "base" is continuous with the body of the bone, and of considerable