What instrument is designed to listen to internal body sounds such as heartbeats?

• A. Sphygmomanometer
• B. Stethoscope
• C. Thermometer
• D. Pulse oximeter

Answer: (B)

The stethoscope is specifically designed for auscultation, which means listening to internal body sounds, including heartbeats and lung sounds. It is a crucial instrument used by healthcare professionals to assess the health of a patient. By placing the stethoscope's chest piece against the patient's chest or back, a healthcare provider can detect various sounds, including the rhythm and quality of heartbeats and the presence of any abnormal lung sounds.

In contrast, a sphygmomanometer measures blood pressure, which involves detecting the pressure of blood flowing through arteries rather than listening to sounds. A thermometer is used for measuring body temperature, and a pulse oximeter measures the oxygen saturation level in the blood. None of these instruments are designed for listening to internal body sounds, highlighting the unique purpose of the stethoscope in clinical practice.