DEFINE ARTERIES, VIENS AND CAPILLARIES
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The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries. Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart. Capillaries surround body cells and tissues to deliver and absorb oxygen, nutrients, and other substances.
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Arteries carry oxygenated blood away from the heart. ... The capillaries then deliver the waste-rich blood to the veins for transport back to the lungs and heart. Veins carry the blood back to the heart. They're similar to arteries but not as strong or as thick.
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