Which portion of the ECG corresponds torepolarization of the atria?a. P waveb. QRS complexc. T waved. none of the above: atrial repolarization is maskedby ventricular depolarization

Which of these accounts for the similarity between the P wave duration and the QRS complex duration despite the ventricle being much larger than the atria? Group of answer choices The His-Purkinje system has a faster conduction velocity than the atrial system The atria contain the same volume of blood as the ventricles Gravity increases the ventricular conduction velocity The rate of phase 4 depolarization is similar in all the conducting cells of the heart

During atrial fibrillation: O A. The EKG shows no discernable P wave. B. There is a noticeable decrease in the regularity of beating. O C. The ventricle continues to maintain cardiac output. O D. None of the above,

17, The P-wave of the ECG is generated by the repolarization of the SA-Node.   A. trueB. false