Write note on
Heart beat
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The human heart pumps about 5 litres of blood per minute. ... As the blood is pumped b the ventricles into the arteries with force, a wave of expansion passes along the arteries. This recorded in order to know the heartbeat. The pulse rate is the same as the rate of heartbeat, i.e., 70-72 per minute.
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the heart beats rhythmically throughout one's life. The periodic contraction and relaxation of the heart is called the heartbeat. The normal human heartbeat is 70-72 per minute. ... The human heart pumps about 5 litres of blood per minute
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