First slide

Exchange of Gases

Question

The exchange of gases in the alveoli of the lungs is influenced by all of the following, except

Easy

A

ATP available in the alveolar cells
B

solubility of the gases
C

thickness of the respiratory membrane
D

partial pressure gradient

Solution

The rate of exchange of gases depends on partial pressure, solubility, diffusion distance (thickness of the membrane) and surface area of exchange. Exchange of gases occurs by simple diffusion and does not require ATP.

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