Stethoscope – an instrument use to listen to the sounds produced by the heart, lungs, and other body organs. Use to take apical pulse and blood pressure. Heartbeat normally sounds like lub-dub. Each lub-dub is counted as 1 beat.
Parts of a stethoscope: 1. Earpieces 2. Binaurals 3. Rubber or plastic tubing 4. Bell 5. diaphragm