cardiovascular EKG

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cardiovascular EKG
2013-12-10 10:17:57

in support of ANP 102
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  1. This is a mass of merging cells that act as a unit.
    functional syncytium
  2. This is a mass of merging cells that act as a unit.
    functional syncytium
  3. This structure is responsible for coordinating events of the cardiac cycle
    cardiac conduction system
  4.  This structure is located in the wall of the right atrium and initiates one impulse after another. it is called the pacemaker because it generates the heart’s rhythmic contractions
    The S-A node
  5. This structure is located in the inferior part of the interatrial septum and provides the only normal conduction pathway between the atrial and ventricular syncytiums.
    The A-V node
  6. The two functions of the AV node are:
    • relay
    • delay
  7. Why are the impulses are delayed as they move through the A-V node
    because this allows time for atria to contract and pump it's blood into the ventricles
  8.  This structure carries impulses to distant regions of the ventricular myocardium
    Purkinje fibers
  9. This structure carries impulses from the AV node through the syncytium
    Bundle of HIS
  10. This structure travels down the intraventricular septum and leads to the purkenji fibers
    Left and Right bundle branches
  11.  This is a recording of the electrical changes that occur in the myocardium during a cardiac cycle.
    An electrocardiogram
  12.  This wave is produced when atrial fibers depolarize
    A P-wave
  13.  This wave is produced when ventricular fibers depolarize.
    A QRS-wave
  14.  This wave is produced when the ventricular fibers repolarize
    A T-wave
  15. The effect of the P wave is?
    atrial contraction
  16. The effect of the QRS wave is
    ventricular contraction
  17. The effect of the T wave is
    ventricular relaxation
  18. This wave indicated the repolarization of the ventricles
    T wave
  19. The PR interval is caused by
    Delay in AV node