What is the name of the vein that carries more oxygen than CO2?

The vein that carries more oxygen than carbon dioxide is called the pulmonary vein. This vein transports oxygenated blood from the lungs to the heart, specifically from the pulmonary capillaries to the left atrium. In contrast to systemic veins, which carry deoxygenated blood, the pulmonary vein is unique in its role of delivering oxygen-rich blood to the heart for distribution throughout the body.