Right Atrium

The right atrium, also known as the right atrium, is one of the two upper chambers of the heart. It receives deoxygenated blood from the body via the superior and inferior vena cava. Located on the right side of the interatrial septum, the right atrium then transfers this blood to the right ventricle via the tricuspid valve. Its main role is to facilitate filling of the right ventricle by receiving deoxygenated venous blood. When the right ventricle contracts, blood is propelled to the lungs for oxygenation. Compared to the right ventricle, the right atrium has a thinner, less muscular wall, as its main function is to receive blood and transmit it to the right ventricle.