Define the DIAPHRAGM of a stethoscope?

Question

diagrm if necessary

Answer 1

DIAPHRAGM of a stethoscope is the side with a flat surface which can vibrate and create an acoustic pressure waves that travel up the tubing to the listener's ears. It is the part mostly used to auscultate or listen to a sound with high frequencies.

Here is a picture: Top part is the diaphragm:
http://www.agion-promo.com/Products/Steth_files/do_you_practice_safe_stethoscope_files/StethDiaphragm.jpg