It
you
listen carefully to someone's heartbeat
through a stethoscope you can hear a double
beat-a faint one followed by a louder one
Suggest a reason for this.
Answers
Answered by
4
Answer:
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 valves close. These characteristic heart sounds have been found to be caused by the vibration…
Answered by
7
Answer:
There are two beats one by one to insure the unidirectional flow of blood in the heart
Explanation:
One beat is one the Auricles or the upper chambers of heart opens and the second when the Ventricles or the lower chambers of the heart opens.
You will get it completely when you'll study this in class 10th
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