Question

How is a stethoscope useful?

Answer 1

The stethoscope is an acoustic medical device for auscultation, or listening to the internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the chest, and two tubes connected to earpieces. It is often used to listen to lung and heart sounds.

Answer 2

$<u >$ In stethoscope, the sound of the patient's heartbeat reaches the doctor by multiple reflection of sound. Thus, it helps in examining patient's heartbeat.