Science, asked by nishant911641, 1 month ago

which is called pacemaker and reserve pace maker???​

Answers

Answered by cuteanushka683
1

Answer:

Electrical impulses from the heart muscle cause your heart to beat (contract). This electrical signal begins in the sinoatrial (SA) node, located at the top of the heart's upper-right chamber (the right atrium). The SA node is sometimes called the heart's “natural pacemaker.”

Answered by babygirl5575
1

Answer:

The sinoatrial (SA) node or sinus node is the heart's natural pacemaker. It's a small mass of specialized cells in the top of the right atrium (upper chamber of the heart). It produces the electrical impulses that cause your heart to beat.

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