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The arteries are those blood vessels that carry blood away from the heart. This means that, with only two exceptions, arteries are carrying highly oxygenated blood to transport oxygen to the tissue of the body. Arteries are the higher-pressure part of the circulatory system, as they are getting blood from the heart. The pressure in the arteries differs between when the heart contracts and when it expands, the systolic and diastolic pressure, respectively. It is this pressure shift that can be felt as a pulse.............
Veins are those blood vessels that carry blood back to the heart, with a few minor exceptions. For the most part, veins are carrying deoxygenated blood back to the heart, although this is not the case in either pulmonary or umbilical veins, where they carry oxygenated blood. Veins are basically tubes that just collapse when not filled with blood. Within veins are flaps that keep the blood flowing towards the heart, rather than being pulled down and pooling by the effects of gravity.

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the blood which flows in the artery is oxygenated blood (carries oxygen to various parts ) and the blood which flows in veins id deoxygenated blood (which carries carbon dioxide from all the body parts)

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