The occult significance of Aquarius is knowledge. Aquarius, the sign of the water bearer, is an eminently revolutionary sign. There are four types of knowledge or secret science. We need to know what these four types of knowledge are.
Upper limb. The upper limb or upper extremity is the region in a vertebrate animal extending from the deltoid region to the hand, including the arm, axilla and shoulder.
Quick Answer. The medical term for arms and legs is extremities.. The two pairs of extremities on a human being are distinguished by position, with the arms being called the superior or upper extremities, and the legs being called the inferior or lower extremities. Continue Reading.