Chapter 42, Problem 6TYU

Summary Introduction

To review:

The reflection of all the parameters of Fick’s law in the structure of the mammalian lungs.

Introduction:

Fick’s law of diffusion regarding the diffusion of gases was given by Adolf Fick. The law states that the rate of diffusion depends on different parameters, namely, diffusion constant (k), which depends on the gas solubility and temperature, the difference in the partial pressure of gas across the gas exchange surface (P₂ − P₁), available surface area for diffusion (A), and the thickness of diffusion barrier (D). The equation derived by Adolf Fick to determine the rate of diffusion of gases was

$\text{Rate of diffusion}=k\times A\times \frac{(P_2-P_1)}{D}$