Answer:
The kidneys remove waste products from the body by filtering them from the blood.
The kidneys' main function is as a homeostatic regulator. Your body has equilibrium levels for salt content, water content, core temperature, blood pressure and blood volume. The kidneys help to maintain these equilibrium levels, mainly the cardiovascular components. For example, they regulate blood pressure and volume through the absorption of water from the blood.
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The human kidneys are a pair of organs that help to maintain proper water and electrolyte balance, regulate acid-base concentration, and filter the blood of metabolic wastes, which are then excreted as urine.