Is the diaphragm of a stethoscope is used to hear higher pitched sounds?

Yes, the diaphragm of a stethoscope is designed to pick up higher-pitched sounds, such as heart and lung sounds. Its firm surface effectively transmits these frequencies, making it ideal for assessing normal breath sounds and certain heart murmurs. In contrast, the bell of the stethoscope is better suited for lower-pitched sounds, such as some heart sounds and vascular sounds.