Differentiate between an artery and a vein.
| Artery | Vein |
| distribute blood to organs | collects blood from organs |
| moves away from the heart | moves toward the heart |
| valves are present | valves are absent |
| blood pressure is high | blood pressure is low |
| they end in capillaries | they start from capillaries |
| carry oxygenated blood (exception: pulmonary artery) | carry deoxygenated blood (exception: pulmonary vein) |
| further divided into arterioles | further divided into venules |
| have small lumen | have large lumen |
| reddish in color | bluish in color |