Put It All Together · Lungs
One breath: in, exchanged, out — and the blood carries it onward.
Air enters your nose, is warmed and cleaned, runs down your windpipe, branches through bronchi and bronchioles, and arrives in 500 million tiny sacs. There, across a wall thinner than a bubble's skin, oxygen crosses into blood and carbon dioxide crosses out. Then your diaphragm relaxes, and the used air leaves.
There's more: one breath: in, exchanged, out — and the blood carries it onward. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
Body Atlas is an educational product. It does not provide diagnosis, treatment, or personal medical advice. · Privacy