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11 votes
11 votes
When the diaphragm relaxes, does it force CO2 out of the lungs, or just "air" in general? just anwer yes or no thanks :)

User Gooshan
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2 Answers

17 votes
17 votes
Yes air is forced out
User VadimB
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30 votes
30 votes

air is forced out when the diaphragm relaxes

User Majackson
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