Stethoscopes. Two stethoscopes in the shape of a heart. They are used to listen to noises made within the body by the heart, lungs and digestive system. A stethoscope is comprised of two earpieces (at top), tubing (red), and a round sound-detecting device (at bottom). The sound- detecting device has a wide diameter diaphragm to listen to high-pitched sounds; the smaller concave bell side with hole is used to listen to low-pitched sounds. Internal noises can be heard by pressing the device against a patient's body. A stethoscope is useful in diagnosing respiratory ailments of the lungs, abnormalities of the heart, and movements in the digestive system.
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