State differences between blood vessels artery, …

Artery ---
i) It is a blood vessel having a thick wall.
ii) It carries blood from the heart to different parts of the body.
iii) On regulatory demand of the body it can dilate or constrict.
iv) It doesn't contain any valve.
v) All arteries carry oxygenated blood except pulmonary artery.
Vein ---
i) It is a blood vessel having thin wall.
ii) It brings blood from different parts to the heart.
iii) It can't dilate or constrict under normal condition.
iv) It contains valves that allow the blood to flow in one direction towards the heart.
v) All veins carry deoxygenated blood except pulmonary vein.
Capillary ---
i) It a very narrow blood vessel which has very thin walls.
ii) It forms a network throughout the body in all living cells connecting arteries to veins.
iii) It can dilate or constrict according to the requirement of tissue.
iv) It doesn't have any valve.
v) It contains mixed blood as it connects arteries and veins.