Question

what do you mean by pacemaker

Answer 1

Pace makers are found in heart

They generate electrical pulses.

Natural pace maker of heart is Sinovial node

SA node is found at top of heart .
Pace maker send eldctricl pulse which cause heart beat

Answer 2

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.

hope it will help you