Rene Laennec invented a device used to measure the heartbeat. Name the device.
A
Thermometer
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B
Stethoscope
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C
Ventilator
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Solution
The correct option is B Stethoscope
A stethoscope is a medical instrument used in listening to sounds produced within the body, chiefly in the heart or lungs.
It was invented by the French physician R.T.H. Laënnec, who in 1819 described the use of a perforated wooden cylinder to transmit sounds from the patient's chest to the physician's ear.