How does the right atrium and right ventricle function in the circulation of de-oxygenated blood?

The circulation of deoxygenated blood, the right atrium and right ventricle work in tandem to pump blood to the lungs for oxygenation. Deoxygenated blood from the body returns to the heart via the superior and inferior vena cava, entering the right atrium. During atrial contraction, the tricuspid valve opens, allowing the right atrium to push blood into the right ventricle. Subsequently, the right ventricle contracts, pumping deoxygenated blood through the pulmonary valve into the pulmonary artery. This artery carries the blood to the lungs, where oxygen and carbon dioxide exchange occurs. The right atrium and ventricle form the pulmonary circulation loop, ensuring the continuous flow of deoxygenated blood to the lungs for oxygenation, facilitating the systemic distribution of oxygen-rich blood to meet the body’s metabolic demands.