What blood vessels have you observed?
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Oxygen rich blood leaves the left side of the heart and enters the aorta. The aorta branches into arteries, which eventually branch into smaller arterioles. Arterioles carry blood and oxygen into the smallest blood vessels, the capillaries. Capillaries are so small they can only be seen under a microscope.
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: Blood vessels are cylindrical tube-like structures that are present in almost all the parts of the body. They are responsible for the transportation of blood from one part to another. Each type of blood vessel functions differently, i.e. each type of vessel carries blood to and from different tissues and organs.
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