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  4. The exchanges of gases in the alveoli of the lungs takes place by :

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Q. The exchanges of gases in the alveoli of the lungs takes place by :

Haryana PMTHaryana PMT 2000

Solution:

The exchange of gases in the alveoli of the lungs takes place by simple diffusion. The exchange of gases between the alveoli and blood in the lung is the result of difference in partial pressure of respiratory gases.