Question: 4. Define Autorhythmicity. 5. Which Structure Of The Heart Is Known As The Cardiac Pacemaker? 6. If The Cells Of The SA Node Did Not Function, How Would The Heart Rhythm Change And The Heart Rate Be Affected? 7. Why Is It Important For Impulses From The Atria To Be Delayed At The AV Node Before They Pass Into The Ventricles?
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4. Define autorhythmicity. 5. Which structure of the heart is known as the cardiac pacemaker? 6. If the cells of the SA node did not function, how would the heart rhythm change and the heart rate be affected? 7. Why is it important for impulses from the atria to be delayed at the AV node before they pass into the ventricles?
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