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5 Cards in this Set
- Front
- Back
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P Wave
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*Represents the depolarization (contraction) of the atria
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P-R Interval
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*The time it takes for an electrical impulse to originate in the SA node and be conducted through the atrica and the AV node.
*Is measured from the beginning of the P wave tot he beginning of the QRS complex. *Represents depolarization of the SA node and the atria down to the AV node |
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QRS Complex
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*Represents the depolarization (contraction) of the ventricles
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ST-Segment
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*The area between the end of the S wave and the beginning of the T wave.
*The ST-segment should rest on the isoelectric line. |
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T Wave
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*Represents the heart repolarizing (relaxing).
*This is called the refractory period |
