How many types of blood vessels are there? And what are they
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There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process.
- 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.
- Capillaries connect the arteries to veins. The arteries deliver the oxygen-rich blood to the capillaries, where the actual exchange of oxygen and carbon dioxide occurs.
- Veins carry the blood back to the heart. They’re similar to arteries but not as strong or as thick. Unlike arteries, veins contain valves that ensure blood flows in only one direction.
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