Friday, July 23, 2010

Respiratory System

1 comment:

  1. he respiratory system


    I believe that it is very important to know since we breathe and because, to the equal one of a good oxygenation has towards the lungs and that of which tranforma and it happens for different parts of the body, since it is: the trachea, in the larynx and the esophagus.



    Yaneli Mendez

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