I understand that when we breathe the air goes to our lungs and then send the waste air out (very simplified). But how does our nose and mouth move to breathe, and how do they make air go into them and push out of them?
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A diaphragm near the base of your lungs. It contacts to pull in air and expands to force it out. It has nothing to do with your mouth and nose other than having to open them to allow the air to come in.
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