Understanding Arrhythmia
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Questions and Answers

Which structure in the heart acts as the cardiac pacemaker?

  • Sinoatrial (SA) node (correct)
  • Bundle of His
  • Atrioventricular (AV) node
  • Purkinje fibers

    • What may cause the death of pacemaker cells or conducting tissue in the heart?

  • A cardiac tissue disorder
  • Sympathetic control changes
  • An infarction (correct)
  • Circulating drugs

    • Which factor is not mentioned as a potential cause of arrhythmias?

  • Smoking
  • High cholesterol levels (correct)
  • Alcohol consumption
  • Rheumatic fever

    • Which part of the heart conducts the electrical current throughout the ventricular tissue?

    <p>Purkinje fibers</p> Signup and view all the answers

    What is the normal resting heart rate maintained by?

    <p>(SA) node</p> Signup and view all the answers

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