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The upper heart chambers of a frog, known as the atria, play a crucial role in receiving blood. The right atrium receives deoxygenated blood from the body, while the left atrium receives oxygenated blood from the lungs. These chambers contract to push blood into the lower chambers (ventricles) for distribution throughout the frog's body. This design helps maintain efficient circulation, especially given the frog's dual life in water and on land.

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2d ago

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