Blood movement through the heart follows a precise pathway. Deoxygenated blood from the body enters the right atrium via the superior and inferior vena cava. It then flows into the right ventricle, which pumps it into the lungs through the pulmonary artery for oxygenation. Oxygenated blood returns to the left atrium via the pulmonary veins, moves into the left ventricle, and is then pumped out to the body through the aorta.
