arteries and veins distinguish between
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Arteries and veins (also called blood vessels) are tubes of muscle that your blood flows through. Arteries carry blood away from the heart to the rest of the body. Veins push blood back to your heart. You have a complex system of connecting veins and arteries throughout your body.
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Arteries -oxygenated blood ,red in colour, pulmonary artery-deoxygenated blood, present in inner layer of the body
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veins-deoxygenated blood,green in colour, pulmonary vein -oxygenated blood , present in outer lyaer of the boady
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