Final answer:
The right atrium receives deoxygenated blood from the body. This blood is then pumped to the lungs for reoxygenation.
Explanation:
The right atrium of the heart receives blood back from the body that's low in oxygen. Deoxygenated blood enters the right atrium from the superior vena cava and inferior vena cava, then passes to the right ventricle through the tricuspid valve for pumping to the lungs for re-oxygenation.
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