Question

role of pacemaker in heart

Answer 1

It replaces the heart's defective natural pacemaker functions. 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.

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Answer 2

pacemaker is a small device which says that your heart is beating irregularly or to slow.

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