Stethoscope

{steth/ -o-skop) [arf/doq, breast; gkoteiv, to view]. An instrument for ascertaining the condition of the organs circulation and respiration by the sounds made by these organs. It consists of a hollow tube, one end being placed over the locality to be examined, the other at the ear of the examiner. The binaural S. consists of a Y-shaped tube, the flexible branches being applied each to an ear of the listener. 600