Set against a blue background the doctor’s stethoscope is compared with the size of a key. Invented in France in 1816 by Rene-Theophile-Hyacinthe Laen

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Set against a blue background the doctor’s stethoscope is compared with the size of a key. Invented in France in 1816 by Rene-Theophile-Hyacinthe Laennes, the stethoscope is most often used to listen to heart sounds and breathing and also intestines, blood flow in arteries and veins. In addition to acoustic, other types include electronic, recording and fetal.

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Photo credit: © Newscast Online / Alamy / Afripics
License: Licensed
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Keywords: copy, doctor, gp, ket, key, master, medical, stethoscope, success, work