Question

What does a pacemaker replace in the heart?

Answer 1

Hey, mate here is your answer》》

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.

Hope this answer will help you..《《

Answer 2

Hello,
It replaces the heart's defective natural pacemaker functions.The SA node is the heart's natural pacemaker.
Thank you!!!