AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
Stethoscope (across bottom) on a doctor's desk. The doctor's hands and paperwork are also seen. A stethoscope is used to listen to sounds within the body. The sound is detected through a diaphragm at one end of the device (round, lower right) and transmitted to the earpieces (across lower centre) by the tubing. A stethoscope is usually used to diagnose disorders of the heart and lungs.
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