Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pulmonary physiology: gas diffusion. When the gas reaches the alveolus (a), the oxygen diffuses through the alveolar-capillary membrane (b). Carbon dioxide diffuses from plasma to the alveoli and gets eliminated on exhalation (c). Figure adapted from [16].
