What does each part of the "bunch of grapes" model represent, relation to the breathing system
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The main stem of this branch of grapes is the trachea. They then branch into smaller ducts called bronchi.
These bronchi/stems branch into even smaller branches/stems called bronchioles.
The bundle of grapes are the alveolar sacs that stem from alveolar ducts/bronchioles.
Each grape represents an alveolus. This is where the gas exchange occurs.
This is the path that air travels when you inhale.
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Explanation:
1 is bronchi
2 is bronchioles
3 is alveoli
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