Chapter 31.4, Problem 3MC

Summary Introduction

To describe:

The diffusion gradients for $\text{O2}$ and $\text{CO2}$ in the lungs and in the rest of the body.

Concept introduction:

The lungs receive oxygen from the air during the process of inhalation. This oxygen gets transferred to the bronchi, bronchioles and alveoli of the lungs where the exchange of this gas takes place with carbon dioxide across the capillary network and epithelial cells in the lungs.