http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/Pulmonary.html This site talks about the different parts of the respiratory system, where they are located, and what they do in the system. It also talks about what happens when you breathe in your body. It also lists and describes some diseases of the respiratory system.
Along with the things listed above, it includes graphs and diagrams of what's in the air and where the parts are located. It also has more links to different websites for more information. http://www.merckmanuals
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http://www.getbodysmart
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