Which of the following is incorrect about ECG (electrocardiogram)?
The QRS complex represents ventricular depolarization, not atrial contraction.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation ECG and Blood Vessels
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Which part of the ECG represents atrial depolarization?
The P wave in an ECG represents the depolarization of the atria, leading to atrial contraction.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation ECG and Blood Vessels