|Arteries carry blood away from the heart and distribute to different body parts.
|Veins bring blood from different body parts back to the heart.
|All arteries carry oxygenated blood except pulmonary arteries.
|All veins except pulmonary veins carry deoxygenated blood.
|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.
|The blood in arteries has considerable pressure.
|The blood in veins has lower pressure.
|They have thick elastic walls and narrow lumen.
|They have thinner, scarcely elastic walls and wide lumen.
|They are deeply seated.
|They are superficial or surfacely located.
|They have no valves in them.
|They have muscular flaps called valves to prevent the back flow of blood and to counteract gravity.
|They become empty after the death of the animal.
|They contain blood even after the death of the animal.
|Tunica media is thick, having more muscle fibers and elastic fibers.
|Tunica media is thin, having fewer muscle fibers and elastic fibers.
|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.