1. blood flows into the upper-right ventricular veins and large, flowing through the heart into the right bottom and pump to the lungs.2. blood purifier that until there is full of oxygen from the lungs to the heart to return to city on the left, and then flows down to the lower-left heart to pump to feed throughout the body.3. when the blood flow throughout the body and the blood that was broken, they will flow back into the heart, right on the heart and lungs is to pump again. As this cycle forever.
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