Why is blood pressure in human beings measured at the position shown by arrow?

It is nearer to the heart

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It is at the same level as the heart

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To measure the pressure of blood vessels on the arm

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The sphygmomanometer can only be used to measure the pressure of blood exerted

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Solution

The correct option is B
It is at the same level as the heart

The heart functions as a pump to the body, therefore, when it contracts with its beat it sends a surge of blood through the blood vessels and the pressure increases. Hence it is important to measure the pressure at the level of heart because we know pressure varies with height

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