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Physiology of Breathing

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Updated September 22, 2008

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Inflation of the Lungs
Physiology of Breathing
Photo © A.D.A.M

Lungs are not hollow like balloons, but are made of spongy, flexible tissue that inflates when filled with air. So, how does the air get in there? Where does it go? Let’s follow a breath of air from start to finish.

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