Stethoscopes are medical devices, used to listen to the sounds of the human body. They are also used to listen to the body of an animal. These sounds include the heart and bowel. Doctors use them in a medical setting. René Laënnec, who was a French doctor, invented the stethoscope in 1816.
When it was first made, it was created from wood. As time and technology progressed, stethoscopes are now made from metal. Before the stethoscope, doctors would put their head against the patient's chest and listen. This method is still used today, but it is not as effective as using a stethoscope.