The Pulmonary vein blood vessel carries oxygenated blood from the lungs back to the heart. Therefore, it carries the highest concentration of oxygen.
The heart is a large, muscular organ that pumps blood filled with oxygen and nutrients through the blood vessels to the body tissues.
- A network of arteries and veins also carry blood throughout the body
- Arteries transport blood from the heart to the body tissues.
- Veins carry blood back to the heart.
- The pulmonary veins bring oxygen-rich blood to the left atrium.
