Dental Admissions Test (DAT) Practice Test

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Which of the following is not a function of the kidneys?

  1. Excretion of metabolic wastes

  2. Regulation of blood pressure

  3. Production of red blood cells

  4. Maintenance of electrolyte balance

The correct answer is: Maintenance of electrolyte balance

While excretion of metabolic wastes, regulation of blood pressure, and production of red blood cells are all functions of the kidneys, maintenance of electrolyte balance is not. This is primarily the function of the kidneys. The kidneys do play a role in maintaining electrolyte balance, but this is not their primary function. Other physiological processes, such as the digestive system and the skin, also contribute to maintaining electrolyte balance.

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