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.
Upper motor neuron s (UMN) are a type of first order neuron. They are unable to leave the central nervous system. The pyramidal tract is a very important upper motor neuron tract.