Question

What is the real sound that we heard during heart beat.

Answer 1

four types of sound come out during the heart relaxation and contraction but we can able to hear to sounds which are Lubb and Dubb

Answer 2

Closure of the heart valves is associated with an audible sound, called the heartbeat. The first sound occurs when the mitral and tricuspid valves close, the second when the pulmonary and aortic semilunar valvesclose. These characteristic heart sounds have been found to be caused by the vibration…