The Caduceus Symbol represents the intertwining of positive & negative energies about a central channel

The 3 Rays

The caduceus symbol graphically represents the expression of the 3 rays of light that manifest at birth at the request of the incarnating Soul.  Ultimately they appear in physical reality as the spinal column, but that in itself is a direct reflection of the 3 nadis of energy being expressed as the two snakes Ida (female/yin) and Pingala (male/yang), spiraling about Sushumna (the central channel--neutral).  When the forces of the yin and yang energy are equalized at any chakra, the energy in Sushumna becomes available, thus allowing those forces to ascend or descend along the central channel at that location.

In the 1st chakra (Muladhara), these 3 nadis of energy appear to be tied in a knot, creating a 3-fold bond.  From there, Ida and Pingala spiral upward about Sushumna and meet again at the 6th chakra (Brow).  Ida (the Moon--yin) operates inwardly along the right side of the body, though in its upward spiral around Sushumna the energy expression alternates between inward (right side) and outward (left side).  Similarly, Pingala (the Sun--yang) operates outwardly along the left side of the body, though in its upward spiral around Sushumna the energy expression alternates at each chakra from outward (left side) to inward (right side).  Thus, Ida expresses passively when it spirals to the right side, and actively when it spirals to the left.  Likewise, Pingala expresses actively when it spirals to the left side, and passively when it spirals to the right.  Here again we see the division of energy into 4 modes of expression.

According to most references, for men:  Ida starts at the right testicle and meets with Pingala at the Brow chakra, then crosses over and ends at the left nostril.  Similarly, Pingala starts at the left testicle and meets with Ida at the Brow chakra - then crosses over and ends at the right nostril.  There are a few references that mention that for women the reverse is true where Ida starts at the left ovary and Pingala starts at the right ovary.  There may be some truth to this, but for this study the polarities of Ida and Pingala remain as was stated above for men, replacing the term testicle with ovary for women.  At any chakra center both Ida and Pingala will be active, where women will more often align with the forces of Ida and men will more likely align with that of Pingala.  Remember that each person is different however, and at times some men may align more with Ida and some women may align more with Pingala.

The Female aspect of the snakes, Ida, plays the part of being the holographic imprint that reflects the fullness of the original desire to incarnate, incorporating all of the possible paths of evolution available to the incarnating Soul.  Through its inward expression (when active at night), Ida represents the optimal expression of the birth request and outpictures as the holographic backdrop of the dance of shiva in the Brow.  Through its outward expression (when active in the day), Ida represents as a backdrop in the 3rd Eye the holographic difference between the expected Shiva expression and the current Soul expression.

The Male aspect of the snakes, Pingala, plays the part of being the representation of the 3D reality evolving through time as the Ego chooses in the moment.  Through its outward expression (when active in the day), Pingala represents the Souls outer appearance, attitude and conditioning as adjusted by environmental, mental and emotional factors, essentially the current life expression.  Through its inward expression (when active at night), Pingala represents the state of the Souls seed as it has evolved through the evolutionary moment.  The seed of the Soul contains the compilation of the works, deeds and heartfelt offerings generated by the Ego during its evolutionary experience through Life.  At death the Soul judges the Cherub as it walks the experience of the holographic difference between the original desire to incarnate and the created seed accumulated by the Ego through life.