When you inhale, your diaphragm contracts to make room for your lungs, which fill up with air the way balloons do when you blow them up. The model demonstrates this action when you pull down on its latex bottom. When you exhale, your diaphragm expands, forcing the air out of your lungs.
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Answer:
When you inhale, your diaphragm contracts to make room for your lungs, which fill up with air the way balloons do when you blow them up. The model demonstrates this action when you pull down on its latex bottom. When you exhale, your diaphragm expands, forcing the air out of your lungs.
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