객관식
The pacemaker potential is also called which of the following?
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18. The Heart
Electrical Conduction System of the Heart
객관식
In the electrical conduction system of the heart, which part of the ECG waveform represents ventricular depolarization?
A
T wave
B
QRS complex
C
P wave
D
PR interval
검증된 단계별 안내1
Understand the components of the ECG waveform: The ECG (Electrocardiogram) is a graphical representation of the electrical activity of the heart. It consists of several key components: P wave, QRS complex, T wave, and PR interval.
Identify the function of each component: The P wave represents atrial depolarization, the QRS complex represents ventricular depolarization, the T wave represents ventricular repolarization, and the PR interval represents the time between the onset of atrial depolarization and the onset of ventricular depolarization.
Focus on ventricular depolarization: Ventricular depolarization is the process by which the ventricles of the heart contract, pumping blood to the lungs and the rest of the body. This is a crucial part of the cardiac cycle.
Recognize the QRS complex: The QRS complex is characterized by a rapid sequence of deflections in the ECG waveform. It is typically larger than the P wave and occurs after the PR interval.
Conclude that the QRS complex represents ventricular depolarization: Based on the understanding of the ECG components, the QRS complex is the part of the waveform that corresponds to the electrical activity associated with the contraction of the ventricles.
