Kidney, Chinese medicine believes that the kidney is the congenital foundation, and the five elements belong to water, so the kidney is also called water dirty It has the function of presiding over and regulating human body's water-liquid metabolism. Kidney has the function of opening and closing, and opening and closing is the function of bladder. When it is opened, water can be discharged. If it is closed, the water needed by the body can remain in the body and can be properly opened and closed to complete the normal excretion of urine in the body.

Lingshu Benbo: "The kidney is combined with bladder meridian and bladder meridian, and it is also the house of body fluid." The kidney of the five internal organs and the bladder of the six internal organs are the exterior and interior of each other, and the body fluid is stored in the bladder, which corresponds to the water in the five elements, so its function is also related to the water in the human body.

kidney function

First, excrete metabolites and harmful substances into the body.

The human body is metabolized all the time. In this process, some unnecessary and even harmful wastes will inevitably be produced, a small part of which will be discharged from the gastrointestinal tract and most of which will be discharged from the kidneys, thus maintaining normal physiological activities of the human body. In addition, the kidneys can excrete some toxic substances that enter the body.

Second, through the generation of urine, maintain water balance.

This is the main function of the kidney. When blood flows through the glomerulus, due to the pressure, it will filter out a liquid which is the same as plasma but does not contain protein. This liquid is called protourine. When the original urine passes through the renal tubule, most of the water, all the sugar and part of the salt are reabsorbed and sent back to the blood, and most of the nitrogen is no longer absorbed.