Biology for IGCSE & O level - Excretion In Humans (Section 3 - No. 19)
Which of the following is a function of the kidneys?
Regulation of blood pressure.
Production of red blood cells.
Excretion of waste products.
Digestion of food.
Explanation
The kidneys regulate blood pressure, produce erythropoietin (which stimulates red blood cell production), and excrete waste products.
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