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(D) The diffusion of gases across the alveolar membrane is influenced by several factors:$1$. Solubility of the gases: Gases with higher solubility (l

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All of the above

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(D) The diffusion of gases across the alveolar membrane is influenced by several factors:$1$. Solubility of the gases: Gases with higher solubility (like $CO_2$) diffuse faster than those with lower solubility (like $O_2$).$2$. Thickness of the membranes: The diffusion membrane is made up of three layers (thin squamous epithelium of alveoli,endothelium of alveolar capillaries,and the basement substance in between). The total thickness is much less than a millimeter,which facilitates diffusion.$3$. Pressure gradient: The partial pressure gradient of $O_2$ and $CO_2$ across the diffusion membrane is the primary driving force for the exchange of gases.Therefore,all these factors play a significant role in the diffusion of gases.

Which of the following factors affects the diffusion of gases?

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