arm - choose a jigsaw puzzle to solve

In human anatomy , the arm is the part of the upper limb 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, which extends from the shoulder to the elbow , the forearm which extends from the elbow to the hand , and the hand . Anatomically the shoulder girdle with bones and corresponding muscles is by definition a part of the arm. The Latin term brachium may refer to either the arm as a whole or to the upper arm on its own.