Science, asked by sidelarif, 8 months ago

how does heart beat originate

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Answered by Anonymous

1

The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles. The SA node sets the rate and rhythm of your heartbeat.

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Answered by sakshi343725

0

Above snap is the answer.....

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