Bones of the upper limb

The scapula (: scapulae or scapulas), also known as the shoulder blade, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone). Like their connected bones, the scapulae are paired, with each scapula on either side of the body being roughly a mirror image of the other. The name derives from the Classical Latin word for trowel or small shovel, which it was thought to resemble.

The humerus (; : 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 processes (trochlea and capitulum), and 3 fossae (radial fossa, coronoid fossa, and olecranon fossa). As well as its true anatomical

one of the two long bones of the forearm

thumb|Right ulna, lateral aspect. (After Piersol.) thumb|Right ulnar bone, medial aspect. (After Piersol.)

bony projection on the proximal end of the humerus

bony projection on the proximal end of the humerus

articular surface of the elbow joint which articulates with the trochlear notch of the ulna

thumb|The rod-like interclavicle of Ophiacodon (a [[Permian synapsid) connected to a pair of rounded clavicles. Seen in ventral view (i.e. looking towards the chest from below)]] An interclavicle is a bone which, in most tetrapods, is located between the clavicles. Therian mammals (marsupials and placentals) are the only tetrapods which never have an interclavicle, although some members of other groups also lack one. In therians, it is replaced by the sternum, which is similar in shape and function but forms via endochondral ossification (cartilage forming bone). The interclavicle, on the othe

break of the ulna bone in the forearm

a deep triangular depression on the posterior end of the humerus

bony projection on the humerus where the deltoid muscle inserts