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JAMB Biology 2006 Question 15

Question 15

Excretion

Mammals are capable of producing hypertonic urine mainly because of reabsorption in the

  1. A.Bowman's capsule
  2. B.urethra
  3. C.ureter
  4. D.loop of Henle
Show the answer and explanation

Answer: D (loop of Henle)

Explanation

The loop of Henle creates a salty region deep in the kidney. Water is drawn back from the urine there, making the urine concentrated (hypertonic).