Question

the functional unit of a kidney is a(n) multiple choice hilum. calculus. nephron. artery.

Explanation:

• Hilum is a depression in the kidney for blood vessels/ureter entry/exit, not the functional unit.
• Calculus refers to kidney stones, not a functional unit.
• Nephron is the structural and functional unit of the kidney, responsible for filtering blood and forming urine.
• Artery (renal artery) supplies blood to the kidney, not the functional unit.

Answer:

C. nephron