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The difference in the partial pressures ...

The difference in the partial pressures of carbon dioxide is very less at the alveoli of lungs (about 5 mm Hg). Still higher amount of carbon dioxide can diffuse through the diffusion membrane compared to that of Oxygen. The reason is

A

Difference in the partial pressures of oxygen is low at the alveoli of lungs when compared to `CO_2`

B

Solubility of carbon dioxide is 20-25 times higher than that of oxygen.

C

The alveolar membrane is with a single layer of thin squamous epithelium

D

Thin diffusion membrane is favourable for diffusion of gases

Text Solution

Verified by Experts

The correct Answer is:
B
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