Breathing and Exchange of GasesHard

Question

O2 and CO2 are exchanged by exchange part of the respiratory system by simple diffusion mainly based on-

Options

A.Pressure gradient
B.pulmonary volume
C.Thoracic pressure
D.Atmospheric pressure

Solution

-Alveoli are the primary sites of exchange of gases. Exchange of gases also
occur between blood and tissues. O2 and CO2 are exchanged in these
sites by simple diffusion mainly based on pressure/concentration
gradient.
See ncert 272

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