Understanding ECG and Cardiac Conduction System
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Questions and Answers

Which structure is responsible for continually and rhythmically sending impulses in the heart?

  • The sinoatrial node (SA node) (correct)
  • The Purkinje fibers
  • The atrioventricular node (AV node)
  • The atrioventricular bundle (AV bundle)

    • Which group of specialized muscle fibers is the only conduction pathway between the atria and ventricles?

  • The atrioventricular bundle (AV bundle)
  • The atrioventricular node (AV node) (correct)
  • The sinoatrial node (SA node)
  • The Purkinje fibers

    • What is the function of the AV bundle in the heart's impulse conduction system?

  • To continually and rhythmically send impulses
  • To pick up impulses from the atria
  • To serve as the only conduction pathway between the atria and ventricles
  • To conduct the impulse down the length of the interventricular septum (correct)

    • Where is the SA node located?

    <p>In the wall of the right atrium</p> Signup and view all the answers

    Which group of specialized muscle fibers picks up the impulse from the depolarizing atria?

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

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