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The Respiratory System and its act of gas exchange is shown in this video.It details how air passes through the alveolar sacks to the alveoli where gas exchange occurs. | more...

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Channels: Medical

Tags: Respiratory System alveolar sack gas exchange

Upload by: SamuelMorse on 14-11-2010.

Duration: 1m 31s

Dnatube: Sciencific and Medical video site.