| S.N. |
Arteries |
Veins |
| 1. |
Arteries carry blood away from the heart and distribute to different body parts.
|
Veins bring blood from different body parts back to the heart. |
| 2. |
All arteries carry oxygenated blood except pulmonary arteries. |
All veins except pulmonary veins carry deoxygenated blood. |
| 3. |
The flow of blood is intermittent and fast due to the pumping action of the heart. |
The flow of the blood is slow and steady. |
| 4. |
The blood in arteries has considerable pressure. |
The blood in veins has lower pressure. |
| 5. |
They have thick elastic walls and narrow lumen. |
They have thinner, scarcely elastic walls and wide lumen. |
| 6. |
They are deeply seated. |
They are superficial or surfacely located. |
| 7. |
They have no valves in them. |
They have muscular flaps called valves to prevent the back flow of blood and to counteract gravity. |
| 8. |
They become empty after the death of the animal. |
They contain blood even after the death of the animal. |
| 9. |
Tunica media is thick, having more muscle fibers and elastic fibers. |
Tunica media is thin, having fewer muscle fibers and elastic fibers. |
| 10. |
In tunica interna, elastic membrane is thick and endothelial cells are more elongated. |
In tunica interna, elastic membrane is thin and endothelial cells are less elongated. |
