Kidneys are our biological filter, without this vital organ, a person can not fully exist. Kidneys regulate the production of renin, a hormone that affects arterial pressure. But the main function of the kidneys is cleaning: during the day, the kidneys can clear about 2 thousand liters of blood, filtering the “waste” that is formed during the metabolism. Such “waste” is concentrated in the urine, and in the arterial current there is already purified blood.
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