When we breathe in air enters our lungs because the pressure in our lungs is less than the pressure in the surrounding atmosphere. O True O False
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When we breathe in, our diaphragm contracts and our chest cavity expands. This expansion creates a lower pressure inside our lungs than the pressure outside. Show more…
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air moves in and out of the lungs when there is a change in the air pressure inside the chest cavity. (true or false)
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