PMSC12004 | Understanding ECG basics
Study Guide.
Depolarization - answerThe electrical stimulation of the heart muscle which causes
contraction.
Repolarization - answerRest and relax
Recovery of the heart muscle following contraction.
Electriocardiogram - answerA record of the electric activ...
Atrioventricular (A-V) Node - answer✔The electrical pathway between the atria and ventricles,
it slows the stimulus of depolarization.
Atrium - answer✔The smaller, upper chambers of the heart.
Ventricle - answer✔The larger, lower chambers of the heart.
P-Wave - answer✔Represents the depolarization of both atria
QRS Complex - answer✔Represents the depolarization and contraction of both ventricles.
Q-wave - answer✔First initial downward deflection on an ECG.
R-wave - answer✔The first positive deflection on an ECG.
S-wave - answer✔A downward deflection following a positive wave.
T-wave - answer✔Represents the repolarization and relaxation of both ventricles
P-R Interval - answer✔The time it takes from initial atrial depolarization to ventricular
depolarization.
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