HESI A2 Anatomy and Physiology Practice Test 2023 Related

Review HESI A2 Anatomy and Physiology Practice Test 2023 related questions and content

What is the primary function of the kidneys in the urinary system?

  • A. Regulating blood pressure
  • B. Filtering blood to remove waste
  • C. Producing red blood cells
  • D. Regulating electrolyte balance
Correct Answer: B

Rationale: The primary function of the kidneys in the urinary system is to filter blood to remove waste products and excess fluids, which are then excreted as urine. Kidneys act as a filtration system, removing waste like urea, excess salts, and toxins. While the kidneys do play a role in regulating blood pressure by secreting renin and maintaining electrolyte balance by adjusting the levels of sodium, potassium, and other ions in the blood, their main and essential function is filtration and waste removal, making choice B the correct answer.