what is the sinoatrial node how does it control heartbeat
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Your heartbeat is triggered by electrical impulses that travel down a special pathway through your heart: SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node.
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heya, The sinoatrial node (also known as the SA node or the sinus node) is a group of cells located in the wall of the right atrium of the heart.
✌The increased firing rate in the SA node increases the heart rate and cardiac output necessary to deliver more oxygen and nutrients to the muscles for the flight-or-fight response. ... Sympathetic stimulation of heart rate in the SA node....
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