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Reagan Huffman
Physics
22 June, 03:21
What is the pacemaker of the heart
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Jimmy Oneal
22 June, 03:34
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The sinoatrial (SA) node or sinus node is the heart's natural pacemaker. It's a small mass of specialized cells in the top of the right atrium (upper chamber of the heart). It produces the electrical impulses that cause your heart to beat ... It allows the pacemaker to fire when the heartbeat is too slow.
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Edwin Dorsey
22 June, 03:39
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It is the sinus node
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