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Health Sciences 9 Online
OpenStudy (cenaida):

The respiratory system does NOT include the _______. A. diaphragm B. trachea C. bronchi D. heart

OpenStudy (e.mccormick):

Scroll down to the diargram: http://www.medicalook.com/human_anatomy/systems/Respiratory_System.html

OpenStudy (e.mccormick):

It is a really easy diagram. 3 of those 4 are on it.

OpenStudy (cenaida):

I knew it! it was the heart all along... thanks! I just wanted to make sure I was right :)

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