Which of the following is devoid of valves?

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(A) Arteries are blood vessels that carry oxygenated blood away from the heart to various body parts. Because the blood in arteries is under high pres

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Arteries

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(A) Arteries are blood vessels that carry oxygenated blood away from the heart to various body parts. Because the blood in arteries is under high pressure due to the pumping action of the heart,they do not require valves to prevent backflow. In contrast,veins and lymph vessels contain valves to ensure unidirectional flow against gravity,and the heart contains valves to prevent the backflow of blood between chambers.

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