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JAMB Biology 2007 Question 28

Question 28

Excretion

The correct sequence of the movement of urea during urine formation is

  1. A.glomerulus → Bowman's capsule → convoluted tubule → Henle's loop → collecting tubule
  2. B.glomerulus → Bowman's capsule → convoluted tubule → Henle's loop → convoluted tubule → collecting tubule
  3. C.convoluted tubule → glomerulus → Henle's loop → Bowman's capsule → collecting tubule
  4. D.convoluted tubule → Bowman's capsule → Henle's loop → glomerulus → collecting tubule.
Show the answer and explanation

Answer: B (glomerulus → Bowman's capsule → convoluted tubule → Henle's loop → convoluted tubule → collecting tubule)

Explanation

Urea is filtered from the glomerulus into Bowman's capsule, then passes through the proximal convoluted tubule, the loop of Henle and the distal convoluted tubule before reaching the collecting tubule.