iamard921 iamard921

24-03-2020
Physics

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What is the pacemaker of the heart

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oliviaplummer123 oliviaplummer123

24-03-2020

It is the sinus node

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ivyvuong ivyvuong

24-03-2020

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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