Pulmonary Veins: The Vessels Carrying Oxygenated Blood to the Heart

The pulmonary veins are the blood vessels that carry oxygenated blood from the lungs to the heart. There are four pulmonary veins, two from each lung. The two pulmonary veins from the right lung enter the right atrium of the heart, and the two pulmonary veins from the left lung enter the left atrium of the heart.