The factor which does not affect the rate of alveolar diffusion is

Options

A. Solubility of gases
B. The thickness of the membranes
C. Pressure gradient
D. Reactivity of the gases

Answer

D

Explanation

* Thickness of membrane is inversely proportional to the rate of diffusion
* Solubility of gases is directly proportional to the rate of diffusion `CO_(2)` is 24 times more soluble than `O_(2)`
* Pressure gradient affects the rate of diffusion in direct proportion.
* Concentration gradient also allows diffusion from the region of high concern to low conc.