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systems. It plays an especially important role in:. The Respiratory System. Blood circulates a-l.rahxephon.tv-series+movie through the Muscle pain lungs. Each system has its own job to do, but each system also depends on the others. You will see how this works as you learn about the respiratory
The system.. the lungs, heart, the and blood vessels work together to form the circle of the part circulatory system. pumping of The the heart forces blood on. the Learn about system. Read Circulatory our encyclopedia entry on Circulatory 
system. The Respiratory System H.I. by Modell T.W. Modell. The fourth model, and Work of Breathing, provides a means of examining the work of
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