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In the United States,the system of taxation is a form of
Electrical Impulse
A rapid, transient electrical charge that travels along the membrane of a nerve or muscle cell.
Chain Reaction
A sequence of reactions where a reactive product or by-product causes additional reactions to take place.
P-R Interval
A measurement on an electrocardiogram (ECG) reflecting the time between the onset of atrial depolarization and the onset of ventricular depolarization; important in diagnosing cardiac conditions.
S-T Segment
A portion of the ECG tracing between the S and T waves, representing the period when the heart's ventricles are depolarized.
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