# How the Lungs Work

Explain how the respiratory system works in detail: air travels through the nose/mouth, down the trachea, into bronchi and bronchioles, reaching tiny air sacs (alveoli) in the lungs where oxygen passes into the blood and carbon dioxide passes out

Builds on: Cells, Tissues & Organs (hard, https://ai.page/c/cells-tissues-and-organs/en.md), How Breathing Works (hard, https://ai.page/c/how-breathing-works/en.md)

Concept id: how-the-lungs-work. Subject: science. Licence: CC BY-SA 4.0.

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