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match the part of the ecg with the correct description

+ R R Q S P-R segment S-T segment Millivolts P wave T wave PR interval QT interval QRS complex P Wave PR interval QRS Complex
science   Anatomy-And-Physiology   
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1. ECG : Electrocardiogram measures the electrical activity generated by the heart as it contracts. the different waves that comprise the ECG represents the sequence of depolarization and repolarization of the atria and ventricles. Different components of ECG include P wave, QRS complex, T wave, PR interval, and QT interval.

P Wave A. The sinoatrial node fires, depolarizing the atria The entire period in which ventricles depolarize, then QT interva

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