What is the function of veins?

Function of veins:

1. Veins are the blood vessels that carry the blood to the atrium of the heart.
2. Veins have thin walls and are generally located just beneath the skin.
3. Most of the veins carry deoxygenated blood from the organs and tissues to the heart.
4. Pulmonary vein is an exception that carries pure or oxygenated blood from the lung to the left atrium of the heart.
5. The main function of veins is to carry the blood from organs to the heart.