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Human Body and Organ System — Science STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8ScienceHuman Body and Organ System3 Marks
Question
Veins are provided with valves.
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Answer

Valves prevent the backflow of the blood. Blood in the veins is not under great pressure so it is likely that it may flow back. But valves prevent such movements. Therefore they are provided with valves.

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