Where does the actual diffusion of O₂ and CO₂ take place in the respiratory system?

Where does the actual diffusion of O₂ and CO₂ take place in the respiratory system?
  1. Conducting part
  2. Exchange part
  3. Alveoli
  4. Bronchioles

Solution

The exchange part of the respiratory system, which consists of the alveoli and their ducts, is the site of actual diffusion of O₂ and CO₂ between blood and atmospheric air.

Asked in: NCERT

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