Depolarizations - Answer charged and contracting cardiac muscle cells
Reporlarization - Answer recovering cardiac muscle cells; returning to equilibrium
Cardiac cycle - Answer the pumping of the heart in a rhythmic cycle of contraction and relaxation
P wave - Answer an upward curve representing ATRIAL contraction
Q wave - Answer a downward deflection after the P wave
R wave - Answer a lard upward spike after the Q wave
S wave - Answer a downward deflection after the R wave
T wave - Answer an upward curve after the S wave, representing the repolarization or return to resting
QRS complex - Answer the QRS waves representing contraction of the ventricles
V1 - Answer fourth intercostal space at RIGHT margin of sternum
V2 - Answer fourth intercostal space at left margin of sternum
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