Question

doctors use stethoscope to hear the sound of the heart why​

Answer 1

Answer:

it enhances the sound

Step-by-step explanation:

the small sound is. made loud through reflection of sound in stethescope...and thus doctors can hear the sound of heart

Answer 2

Answer:

Normal sound of heart that can be heard through the stethoscope is "lupp-dupp". It is the basic sound of heart that can be obtained as a result of each cardiac cycle. The "lupp" is the first sound created due to the closure of mitral and tricuspid valves at the start of systole. The "dupp" is the second sound which is shorter and higher pitched than the first sound, and is produced by closure of the aortic and pulmonary valves, they are commonly referred as semilunar valves.