Pulmonary circuit
Diagram of pulmonary circulation. Oxygen-rich blood is shown in red; oxygen-depleted blood in blue.
This diagram of the pulmonary circuit indicates the right and left pulmonary arteries, right and left pulmonary veins, left and right atria, left and right ventricles, and heart muscle.
Source
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"Illu pulmonary circuit."
http://en.wikipedia.org/wiki/File:Illu_pulmonary_circuit.jpg
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