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In addition to removing waste products generated by body cells the kidneys have several other essential homeostatic functions:
1. Regulating blood volume and blood pressure, by adjusting the volume of water lost in urine, releasing erythropoietin, and releasing renin.
2. Regulating plasma concentrations of sodium, potassium, chloride, and other ions.
3. Controlling calcium ion levels through the synthesis of calcitriol.
4. Helping to stabilize blood pH, by controlling the loss of hydrogen ions and bicarbonate ions.
5. Conserving valuable nutrients while excreting organic waste products, mainly nitrogenous wastes such as urea and uric acid.
6. Assisting the liver in detoxifying poisons.

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8y ago

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