What is the function of a stethoscope?

• A. to measure blood pressure electronically
• B. to visualize internal organs via imaging
• C. to administer injections
• D. to listen to internal body sounds (heart, lungs, abdomen)

Answer: (D)

A stethoscope is used for auscultation—listening to internal body sounds. This tool lets a clinician hear heart sounds (rate, rhythm, murmurs), lung sounds (breathing quality, wheezes, crackles), and abdominal sounds, which helps assess how these organs are functioning. It’s a passive listening device, not a imaging tool and not something that administers injections. While it’s commonly used alongside a cuff to listen for Korotkoff sounds during blood pressure measurement, the stethoscope itself does not measure blood pressure electronically. Choices describing imaging, injections, or electronic measurement don’t fit the stethoscope’s purpose.