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cnv02 cnv02
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6 years ago
The PR interval viewed on a normal electrocardiogram represents:
 
  a. atrial depolarization.
  b. ventricular depolarization.
  c. onset of atrial activation to onset of ven-tricular activity.
  d. electrical systole of the ventricles.
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wrote...
6 years ago
ANS: C
The PR interval represents the onset of atrial activation to the onset of ventricular activity. The P wave represents atrial depolarization. The QRS complex represents ventricular depolarization. The QT interval represents electrical systole of the ventricles.
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