| Arteries |
Veins |
| 1. The blood vessels that arise from the heart and carry blood away from heart are called arteries. |
1. The blood vessels that bring blood to the heart are called veins. |
| 2. Arteries are thick walled blood vessels, situated in deep layers in the body. |
2. Veins cure thin walled blood vessels, situated superficially in the body. |
| 3. Arteries do not have valves. |
3. Veins have valves. |
| 4. Tunica adventitia, the outermost layer of arteries is thick and elastic. |
4. Tunica externa, the outermost layer of veins is thin. |
| 5. Tunica media is very thick and contain elastic fibres. |
5. Tunica media is thin layer and contain involuntary muscle fibres. |
| 6. The lumen of arteries is small. |
6. The lumen of the veins is very spacious. |
| 7. With the exception of pulmonary arteries, all other arteries carry oxygenated blood. |
7. With the exception of pulmonary veins, all other veins carry deoxygenated blood. |
| 8. Blood in the arteries show high blood pressure. |
8. Blood in the veins show lesser blood pressure. |
