I know that the diaphragm expands causing the air to leave the lungs. But what happens when the diaphragm contracts? How does this draw air in to the lungs?
In: Biology
Think of it like people who snap their gum vs blowing bubbles. By creating a seal with the gum around their mouth to the outside, and then opening their mouth cavity larger, it pulls the gum inward expanding an inverse bubble. That’s how your diaphragm contracting expands your lungs to draw in air (though, hopefully without the pop at the end…)
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