Question

appreciate the working process of sphygmomanometer​

Answer 1

It is also known as *blood pressure meter*, *blood pressure monitor* or *blood pressure gauge*.

It is a device used to measure blood pressure.

When a doctor puts the cuff around an arm and pumps it up, the cuff's pressure is released and blood resumes flowing.

Thus the doctor is enable to hear that flow through the stethoscope.
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Answer 2

A sphygmomanometer, also known as a blood pressure monitor, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff in a controlled manner, and a mercury or aneroid manometer to measure the pressure.