In
human anatomy, the
arm is the
upper limb of the body, comprising regions between the
glenohumeral joint (shoulder joint) and the
elbow joint. In common usage the arm extends to the hand. It can be divided into the
upper arm (
brachium), the
forearm (
antebrachium), and the
hand (
manus). Anatomically the
shoulder girdle with bones and corresponding muscles is by definition a part of the arm. The Latin term
brachium may refer to both the arm as a whole or to the upper arm on its own.