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  • How the Body Works: The Exchange of Gases

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How the Body Works: The Exchange of Gases

As air is breathed into the lungs, exchange of gases takes place at the highly folded, moist surface of air sacs. These are richly supplied with blood capillaries, which take up oxygen and give up carbon dioxide.

Icyou | June 4, 2008Watch more videos from Icyou

Tags:. .bodi. .blood. .rich. .breath. .exchang











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