Monday, May 14, 2012

Muddiest points

Hey Guys.. I'm confused on what the alveoli do or if they even have a purpose.
 -Thanks Makenzie
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1 comment:

  1. AnonymousMay 15, 2012 at 9:46 AM

    Hey Big Mack the alveoli is where the gas exchange occurs in the lungs so the vessels can take it back to the heart

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