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... n oxygen, and the oxygenated blood flows from the left atrium to the left ventricle.
Then it is pumped out from the left ventricle into the aorta, travels through the arteries to the whole body, transports oxygen to all the cells, and after completing its task, the blood is collected through the veins to the vena cava and finally returns to the right atrium.
At this point, the blood is lacking oxygen, so it flows from the right atrium to the right ventricle and begins the small c ...
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