Differentiate between arteries, veins and capillaries.
Differentiation between arteries, veins and capillaries:
Artery | Vein | Capillary |
It is a blood vessel having a thick wall. | It is a blood vessel having a thin wall. | It is a very narrow blood vessel that has very thin walls. |
It carries blood from the heart to different parts of the body. | It brings blood from different parts of the body to the heart. | It forms a network throughout the body in all living cells connecting arteries to veins. |
It doesn't contain any valve. | It contains valves that allow the blood to flow in one direction towards the heart. | It doesn't have any valve. |
All arteries carry oxygenated blood except the pulmonary artery. | All veins carry deoxygenated blood except the pulmonary vein. | As the capillaries are much thinner so, the artery becomes arterioles and the vein becomes venules when they need to exchange substances with the cells. |