_______ is used to measure the blood pressure.
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Telegraph
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Teleprompter
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Projector
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Sphygmomanometer
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None of these
D
Correct answer
Explanation
A sphygmomanometer is the medical device used to measure blood pressure, consisting of an inflatable cuff to restrict blood flow and a mercury or aneroid manometer to measure the pressure. It was invented by Samuel Siegfried Karl Ritter von Basch in 1881 and improved by Harvey Cushing in 1901.