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It is a thin muscles that contracts and relaxes to help the air go in and out?​
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It is a thin muscles that contracts and relaxes to help the air go in and out?​

User MisterIsaak
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3 votes
Hey :)

The diaphragm is a thin muscle that contracts and relaxes to help the air go in and out as you breathe

Hope this helps!
User FWDekker
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