Learn about the humerus , the longest and largest bone of the upper limb, and its anatomical landmarks, muscular attachments and fractures. The humerus articulates with the scapula at the shoulder and the radius and ulna at the elbow. The humerus is the upper arm bone. Located in the upper arm, the humerus assists in gross movements and stabilization of the shoulder joint. Learn more. The humerus (/ ˈhjuːmərəs /; pl.: humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). The shaft is cylindrical in its upper portion, and more prismatic below. The lower extremity consists of 2 epicondyles, 2 ... Learn about the humerus , the long bone of the upper arm that connects the shoulder and elbow. Find out its anatomical features, articulations, muscle attachments, nerve and vascular structures, and bone composition.
