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JAMB Biology 1987 Question 24

Question 24

Excretion

The function of the loop of Henle is to

  1. A.increase the flow of urine
  2. B.concentrate amino acids in the kidney tissue
  3. C.concentrate sodium chloride in the medulla of the kidney
  4. D.increase the volume of urine.
Show the answer and explanation

Answer: C (concentrate sodium chloride in the medulla of the kidney)

Explanation

The loop of Henle pumps salt (sodium chloride) into the medulla, making it very salty so that water can be drawn out of the collecting ducts and the urine is concentrated.