Question

What is heartbeat ? Which instrument we use to measure the heartbeat of a person ?​

Answer 1

Explanation:

A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract.

The number of heartbeat per minute or the number of a cardiac cycle per minute is known as the heart rate which is measured by stethoscope

Answer 2

Answer:

which make au live is called heart

which beats is called beats

electrocardiogram