how does a sphygmomanometer work ?
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sphygmomanometer is a device measures blood pressure. It is composes of an inflatable rubber cuff, which is wrapped around the arm. A measuring device indicates the cuff's pressure. A bulb inflates the cuff and a valve releases pressure.
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the sphygmomanometer is used to measure the blood pressure with which blood flows through the venis in the the body.
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