Question

The stethoscope was invented by
(a) Rene Lannec
(b) Wilhem Roentgen
(c) Edward Jenner
(d) Joseph Lister

Answer 1

Hint: French physician who was born in France on February 17th, 1781 discovered a stethoscope that is monaural. He is also a musician. Laennec's cirrhosis is named after his name.

Complete answer:
A medical device that is used for auscultation and hearing the internal sounds of animals or humans is called a stethoscope. A French physicist named Dr. Rene Lannec discovered the stethoscope in the year 1816. The first stethoscope made by Laennec resembles a trumpet and it was a wooden tube.
He discovered it because he is not comfortable to place his ears on a women chest to hear her heartbeat

Additional Information: - In 1816, a young woman with symptoms of heart disease consulted Dr. Rene Lannec. In order to hear the heart sound of that woman, he felt discomfort in placing his ear on her chest. He rolled a paper and observed that I can amplify the heart sounds without any physical contact by placing it in between the chest and his ear.
- It looked similar to the common ear trumpet. From that reference, he invented a model with wooden and named it a stethoscope.
- The stethoscope invented by him was monaural which means the sound is heard only from one position
- Later in 1851 Arthur Learned invented the stethoscope which is binaural.
- George Philip Cammann made the perfect design of the stethoscope.
- Later scientists modified the structure of stethoscope and invented many types of stethoscope namely acoustic stethoscope, electronic stethoscope, doppler stethoscope, fetal stethoscope, etc
- Most commonly used stethoscope is an acoustic stethoscope but one of the major disadvantages of this type is, the sound level was very low. This problem was overcome by the invention of the electronic stethoscope.
So, the correct answer is ‘Rene Laennec’.

Note: -The full name of Rene Laennec is René-Théophile-Hyacinthe Laennec born on February 17th, 1781 who was a physician and musician.
-Rene Laennec died at the age of 45 because of tuberculosis
-In the name of Rene Laennec Hamman's murmur is named as aënnec–Hamman symptom, the appearance of the regenerated liver with fibrous tissue is named as Laennec's cirrhosis.