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  4. In veins, valves are present to check backward flow of blood flowing at

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Q. In veins, valves are present to check backward flow of blood flowing at

AIPMTAIPMT 1995Body Fluids and Circulation

Solution:

Veins carry blood at low pressure as compared to blood carried by arteries. Arteries carry blood from the heart whose function is to pump blood at high pressure so that blood can reach each and every part of the body. Veins carry blood from tissues to the heart, so they carry blood at low pressure. Valves are present in the veins to prevent backflow of flood due to force of gravity.