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The sources of the beats in your heart is the involuntary movement of the valves in your heart opening and closing between the atria and ventricles. The valves direct the blood to certain arteries as it enters through a vein. The valves open and close to make sure the correct blood (oxygen-rich or oxygen-poor) is going into the correct places. The opening and closing of the valves is instantaneous. Therefore, you have a heartbeat.

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15y ago

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