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JAMB Biology 1988 Question 22

Question 22

Respiration

In the mammalian respiratory system, exchange of gases occurs in the

  1. A.lungs
  2. B.bronchi
  3. C.bronchioles
  4. D.alveoli
Show the answer and explanation

Answer: D (alveoli)

Explanation

The alveoli have thin, moist walls surrounded by capillaries, which is where oxygen and carbon dioxide are exchanged.