Why veins are provided with valves along their length?
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Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
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in veins,blood flow is smooth and under low pressure and the blood can backflow unlike arteries where the blood will not backflow due to high prssure.So valves are provided to ensure the unidirectional flow of blood.Mark me as brainliest. :)
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