Zang-fu organs and zang-fu organs are distinguished according to their different functions. Zang-fu organs, including five organs (five internal organs) of heart, liver, spleen, lung and kidney, mainly refer to some organs with rich internal tissues in the chest and abdomen, whose same function is to store essence. Essence refers to an indispensable nutrient that can nourish viscera and maintain life activities. Fu organs include gallbladder, stomach, large intestine, small intestine, bladder and triple energizer (six fu organs), which refer to some hollow organs in the chest and abdomen, and have the functions of digesting food, absorbing nutrition and excreting dregs. In addition, there are "odd and constant fu organs", which refer to a kind of organs different from ordinary fu organs in physiological function, including brain, marrow, bone, pulse, daughter cells and so on. It should be pointed out that the zang-fu organs in traditional Chinese medicine not only refer to anatomical organs, but also summarize the physiological functions and pathological changes of the human body. Therefore, although the names of organs in modern medicine are mostly the same, their concepts and functions are not completely consistent and cannot be equated.
Traditional Chinese medicine believes that the organic whole of human beings is an extremely complex unity with the five internal organs as the core, with the five internal organs as the leading factor, the six internal organs as the coordination, and the body tissues and organs as the network connection, forming five systems. This is a part of Chinese medicine system theory.
The internal organs of human body are not only related in structure, but also closely related and coordinated in function. The completion of a physiological activity often involves the participation of multiple organs, and an organ has multiple physiological effects. This interrelation between the five zang-fu organs is the general expression of the physiological activities of the five zang-fu organs. So visceral lesions can also affect each other.
At present, what we discuss most is the relationship between dirty and dirty, and the relationship between dirty and fu organs.