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