Which part of respiratory system is the site of actual diffusion of O2 and CO2 between blood and atmospheric air?

Exchange part of respiratory system is the site of actual diffusion of O2 and CO2 between blood and atmospheric air.

Exchange part of respiratory system is the site of actual diffusion of O2 and CO2 between blood and atmospheric air.

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Which part of respiratory system is the site of actual diffusion of O₂ and CO₂ between blood and atmospheric air?

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Larynx

Exchange part

Conducting part

Nose

answer is B.

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Exchange part of respiratory system is the site of actual diffusion of O₂ and CO₂ between blood and atmospheric air.

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