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.
The upper extremity is a term used to define the upper limb. This includes the shoulder, arm, forearm, wrist and hand. The hand is a very complex part of the body, and all of the parts of the upper extremity are essential to functioning hands. Within the upper extremity, there are bones, joints, muscles, nerves, vessels and tendons that tie all of the parts together.