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Your heart beats through out your life time. It does not stop for a minute. Nature has created very beautiful mechanism for heart to do so. Your heart take rest for some time during each beat. When your atria contracts the ventricles are taking rest and vise verse. They get rest for some additional time and the miracle continues. Heart muscle has got inherent tendency to beat rhythmically. The sinus node beats faster than other cells and decides the pace.

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10y ago

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