Literally translated as "the shady side of the mountain", Yin is one of the two fundamental polar forces that organise the universe. Yin manifests as substance, darkness, coldness, and quiescence. It includes the material substance of the body, which includes tissue, blood, fluid, and internal secretions. The lack of Yin energy manifests as Heat and Dryness.

The Yin Organs (Spleen, Lungs, Heart, Kidneys, and Liver) store the Vital Substances (Qi, Blood, Fluids, Jing, and Shen). For the specific functions of the Yin Organs, please see "The Organ Meridians Functions and Dysfunctions" under "Traditional Chinese Medicine (TCM)".


Calvin Dale Smith, BA, MSc, R-TCMP, R-Ac
Registered Traditional Chinese Medical Practitioner
Riverside Acupuncture and Wellness Centre
2211 Riverside Dr., Suite 106
Ottawa, ON K1H 7X5