Question

What is called the pacemaker of the heart?

Answer 1

A pacemaker is a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate. Pacemakers are used to treat arrhythmias (ah-RITH-me-ahs). Arrhythmias are problems with the rate or rhythm of the heartbeat

Answer 2

Answer:

Explanation:SA node is called as pace maker of heart.