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Which component of the ekg causes the heart to contract? a. qrs complex b. t wave c. p wave d. av node?

The right answer is QRS complex.

The electrocardiogram records a succession of sequences of the electrical activity of the heart, represented by waves named P, QRS and T:

*The P wave is that of the atria at the moment of their contraction,

*The QRS complex corresponds to the contraction of the ventricles,

*The T wave reflects the repolarization (return to the rest phase) of the ventricles.

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