stethoscope history...

stethoscope history...
The origins of the stethoscope take us all the way back to France in the 1860s. To avoid putting his ear on a female patient's chest in order to hear her heartbeat, a French doctor named Rene Laennec created the first version of the stethoscope by rolling up a paper tube and using it as a funnel
The stethoscope is a medical device for auscultation, or listening to internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the skin, and one or two tubes connected to two earpieces. A stethoscope can be used to listen to the sounds made by the heart, lungs or intestines, as well as blood flow in arteries and veins. In combination with a manual sphygmomanometer, it is commonly used when measuring blood pressure.

[harshitasharma]

Insan Death hone k bad keise pota kore gharelu upaye k upor ak video banaye..jaha koi doctor nahi he