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Question 9273
NEET Biology · Easy

Breathing and Exchange of Gases: Diffusion path MCQ

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Diffusion pathEasyQuestion 9273

Question

In the lungs, carbon dioxide diffuses mainly from:

  1. A
    Deoxygenated blood to alveoli
    Correct
  2. B
    Alveoli to RBC nucleus
  3. C
    Bronchi to pleura
  4. D
    Pleura to trachea

Correct answer

Deoxygenated blood to alveoli

Explanation

CO2 moves down its gradient from venous blood into alveolar air.

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