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The bronchi are passages that direct air into the lungs, which are the main organs of the respiratory system. Inside of the lungs, each bronchus divides into smaller and smaller tubes, resembling the branches of a tree. At the end of the tubes are the alveoli, which are the tiny sacs of lung tissue specialized for the movement of gases between air and blood.

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Q: Which parts of the respiratory system divide into smaller and smaller tubes?
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Related questions

Which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the braches of a tree?

bonchi


Which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the branches of the tree?

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