Which part of the heart receives deoxygenated blood?

The right atrium is the part of the heart that receives deoxygenated blood. Blood that is low in oxygen returns to the heart from the body through the superior and inferior vena cavae, which empty into the right atrium. From there, the deoxygenated blood is then pumped into the right ventricle, which subsequently sends it to the lungs for oxygenation through the pulmonary arteries.

In contrast, the left atrium receives oxygenated blood from the lungs, the left ventricle pumps oxygenated blood out to the body, and the right ventricle is responsible for moving deoxygenated blood to the lungs. Therefore, the right atrium's role is crucial in the circulation process, as it serves as the entry point for blood that needs to be oxygenated.