The San Jiao (三焦) is a traditional Chinese medical (TCM) concept of a functional organ that is not found outside of TCM. San Jiao has been translated as "triple heater," "triple warmer," and "triple burner," the latter of which is probably favored because of the involvement of the San Jiao in metabolism (burner meaning "metaboliser"). Like most other organs, the San Jiao has a Traditional Chinese medicine series of articles.
Energetically speaking, the San Jiao is a yang organ, paired with the pericardium which is the yin organ of the pair. Yang organs are typically hollow, whereas yin organs are more solid. The San Jiao, however, is purely energetic and does not have a physical component, unlike all the other organs in TCM. The San Jiao occupies the trunk of the body, in three compartments (hence the "triple" in its name). The upper compartment is the chest down to the diaphragm. The middle compartment is from the diaphragm to the umbilicus. The lower compartment is from the umbilicus to the top of the pubic bone. However, in dissecting a body, one would not be able to find any structure that sustains the San Jiao, just as dissecting a meridian would not locate a physical entity called Qi. Both are purely energetic in nature.
The San Jiao, like Qi, is more important for what it does than what it is. The San Jiao is a metabolism mechanism similar to an old-fashioned water-wheel that is turned by incoming water and creates energy for accomplishing a task, such as grinding grain in the case of the water wheel, or for metabolising and digestingfood in the case of the San Jiao. The San Jiao is closely associated with the spleen functions of transformation and transportation, particularly the metabolism of incoming food. The San Jiao is also closely associated with the kidney function of metabolising incoming drink. The San Jiao, however, is not limited to one metabolism function as the spleen or kidneys are, but is a general metaboliser which can be applied to a variety of metabolism needs.
Related to the fire Element of the Chinese Five Elements
