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Air passes through:

1. Nose or Mouth

2. Nasal cavity

3. Pharynx

4. Larynx

5. Trachea (in throat)

6. Bronchus (in chest)

7. Bronchioles (finer tubes inside lungs)

into the alveoli (tiny pockets inside lungs).

The o2/co2 exchange occurs in the alveoli where they interface with capillaries.

Hope this helps.

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13y ago

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