Question

The stethoscope was invented by
a) Koch
b) Laennec
c)Walkman
d)Jenner

Answer 1

Hint A stethoscope is a device used for the listening to very low-frequency sounds that can't be heard by the normal human ear. A stethoscope is used in the medical field by the doctors for listening to the heartbeat of the patients.

Complete answer: The stethoscope was invented by Laennec. He was a French physician who used a stethoscope for the diagnosis. He was able to hear the sound of the heart and the lungs and observed whether he made the correct diagnosis using the sound pattern or not. He invented the stethoscope in the year 1816. Before the stethoscope was invented the physicians used the urine sample for the diagnosis of any disease. The invention of the stethoscope has led to the more accuracy of the diagnosis and also uses less time for the assessment.

Additional information:
-Robert Koch is the German physician who discovered the anthrax disease cycle for which he also received the Nobel prize in the field of medicine. He has various other contributions including the famous Koch’s postulates, Mycobacterium, and Asiatic cholera were discovered by him.
-Edward Jenner was the English physician and scientist who created the world’s first smallpox vaccine. He gave the idea of the developing vaccine and curing disease from it. He inoculated a boy with the cowpox and showed the immunity from the cowpox. Thus, giving the idea of the vaccination.

So, the answer is ‘Laennec’.

Note: The full name of Laennec is Rene Theophile Hyacinthe Laennec. A stethoscope is used to hear the sounds produced by the lungs, heart, and intestine. It is also used for listening to the flow of blood in the artery. Along with the sphygmomanometer it is used for measuring the blood pressure of patients.