difference between arteries and veins
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Step-by-step explanation:
Arteries
They have thick walls
They blood from the heart to the parts of the body
All the arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the heart back to the lungs
Arteries do not have valves
Veins
Veins don't have thick walls, that is veins have thin walls
Veins carry blood from the parts of the body to the heart
All the veins carry deoxygenated blood, expect the pulmonary vein which carries oxygenated blood to heart
Veins have valves, to prevent the back flow of blood and allows the blood to flow only in one direction
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