Rana

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Rana

amphibian genus

Learn about this topic in these articles:

circulation and circulatory system

In circulatory system: Amphibians
In the frog, Rana, venous blood is driven into the right atrium of the heart by contraction of the sinus venosus, and it flows into the left atrium from the lungs. A wave of contraction then spreads over the whole atrium and drives blood into the ventricle, where…
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