Sunday, September 1, 2013

Stethoscope

                                      
   A stethoscope is the instrument used by doctors to listen to the sounds made by the heart, lungs or other organs inside a patient's body. Its inventor was a French Doctor, Rene Laennec (1781 - 1826) who first used a paper tube and later a wooden pipe. The modern stethoscope which works into both ears was developed later.

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