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This Concept Map, created with IHMC CmapTools, has information related to: ECG New, Atrial systole begins about 100 msec after the P wave PQ segment represents time taken for impulse to travel from SA node to the AV node, Electrocardiograph is the instrument used to record Electrocardiogram (ECG or EKG), ventricular repolarization immediately before diastole ventricle takes a longer time to, a small downward deflection (Q), a tall sharp peak (R), and a final downward deflection (S) which appears as, AV node spreads through ventricular myocardium and depolarizes the muscle from 1 to 2, QRS complex is produced when signal from AV node spreads through ventricular myocardium and depolarizes the muscle, Electrocardiogram (ECG or EKG) shows 3 principal deflections above and below the baseline Normal Electrocardiogram, P wave whereby Atrial systole begins about 100 msec after the P wave, a small downward deflection (Q), a tall sharp peak (R), and a final downward deflection (S) ST segment corresponds to the plateau in the myocardial action potential and represents the time during which ventricles contract and eject blood T wave, Electrocardiograph records electrical currents in the heart, ventricular repolarization immediately before diastole ventricle takes a longer time to, P wave is produced when a signal from SA node, a small downward deflection (Q), a tall sharp peak (R), and a final downward deflection (S) which appears as, SA node spread to atrial (causing atrial depolarization), P wave whereby, ???? T wave is smaller and more spread out than the QRS complex, and it has a rounder peak, Electrocardiogram (ECG or EKG) shows 3 principal deflections above and below the baseline P wave, Electrocardiogram (ECG or EKG) shows 3 principal deflections above and below the baseline QRS complex, T wave is generated by ventricular repolarization immediately before diastole, ventricular repolarization immediately before diastole ventricle takes a longer time to repolarise than to depolarise