Question

Diffusion of gases occurs in the alveolar region and not in the other parts of the respiratory system. why? ​

Answer 1

Answer:

Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. ... The exchange of O2 and CO2 takes place between the blood capillaries surrounding the alveoli and the gases present in the alveoli. Thus, the alveoli are the sites for gaseous exchange.

Explanation:

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Answer 2

Answer:

Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why? Each alveolus is made up of highly-permeable and thin layers of squamous epithelial cells. ... Oxygen-rich air enters the body through the nose and reaches the alveoli.

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