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1 what are the three structures of the cardiovascular system
Answer:
adapting the body to stressful situations
Explanation:
i think this is the answer
There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. They're tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.