Which heart chamber receives blood from the systemic veins?

The right atrium is responsible for receiving deoxygenated blood from the systemic veins. This blood is collected through the superior and inferior vena cava, which are large veins that return blood from the upper and lower parts of the body, respectively. Once the blood enters the right atrium, it is then directed into the right ventricle, where it will be pumped to the lungs for oxygenation. Understanding this flow is crucial for grasping the heart's overall function in the circulatory system, as the right atrium plays a key role in initiating the process of pulmonary circulation. The other chambers of the heart, such as the left atrium, right ventricle, and left ventricle, have different roles in the circulation of blood, primarily dealing with oxygenated blood or pumping blood out to various parts of the body.