lung physiology

Lung physiology involves the process of breathing, where oxygen from the air enters the lungs and moves into the bloodstream, while carbon dioxide, a waste gas, is expelled. When you inhale, air travels through your windpipe into tiny air sacs called alveoli, where oxygen passes into blood vessels. The oxygen-rich blood then circulates to your organs and tissues. When you exhale, carbon dioxide moves from the blood into the alveoli to be expelled from the lungs. This essential process supports energy production and overall cellular function.