Arteries | Vein |
They carry oxygenated blood (blood that carries a large amount of oxygen) rich in nutrients. | They carry deoxygenated blood (blood that carries a large amount of carbon dioxide) rich in waste materials. |
They carry blood from the heart to the different parts of the body. | They carry blood from the different parts of the body to the heart. |
They have thick muscular walls and narrower lumen. | They have thinner walls and lumen is not narrow. |