The Great Gas Swap · Lungs
Molecules spread out on their own — no energy required.
Open a bottle of perfume in the corner of a room and the smell reaches you without anyone fanning it. Molecules spread from crowded places to empty ones all by themselves. That's diffusion — and it's the entire engine of gas exchange.
There's more: molecules spread out on their own — no energy required. 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