Arteries | Veins | Capillaries |
Arteries have thick elastic and more muscular walls. | Veins have thin and less muscular walls |
Capillary is a narrow blood vessel whose walls have a thin layer of endothelium cells |
Arteries carry oxygenated blood(except pulmonary arteries) away from the heart to all of the body’s tissue | Veins carry deoxygenated blood(except pulmonary vein) from tissues to heart. |
Capillaries are the terminal branches of arteries, which rejoin to form a vein. |