Question

what a pace maker is ?​

Answer 1

Answer:

A person or animal who sets the pace at the beginning of a race, sometimes in order to help a runner break a record.

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He acted as a pacemaker for banister when he broke the four-minute mile.

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Answer 2

Answer:

The SA node of our heart is called as Natural Pace Maker.

SA node -> Sino - Atrial node