| Artery | Vein |
| These vessels carry blood from the heart to various body parts. | These vessels carry blood from the various parts to the heart. |
| Carry oxygenated blood from the heart except the pulmonary artery. | Carry deoxygenated blood from the body parts except the pulmonary vein. |
| Blood flows under high pressure. | Blood flows under low pressure. |
| Absence of valves. | Valves are present to prevent the backward flow of blood. |