Multiple Choice
Which part of the ECG waveform represents atrioventricular conduction?
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18. The Heart
Electrical Conduction System of the Heart
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Which of the following indicates ventricular depolarization in the heart's electrical conduction system?
A
PR interval
B
T wave
C
P wave
D
QRS complex
Verified step by step guidance1
Understand the heart's electrical conduction system: The heart's electrical activity is recorded as an electrocardiogram (ECG), which shows different waves and intervals corresponding to specific phases of the cardiac cycle.
Identify the components of an ECG: The main components include the P wave, QRS complex, T wave, and various intervals such as the PR interval.
Learn what each component represents: The P wave indicates atrial depolarization, the QRS complex represents ventricular depolarization, and the T wave corresponds to ventricular repolarization.
Focus on ventricular depolarization: Ventricular depolarization is the process by which the ventricles prepare to contract, and this is represented by the QRS complex on an ECG.
Review the options given: Among the options (PR interval, T wave, P wave), the QRS complex is the correct indicator of ventricular depolarization.
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