Question at position 10 Which portion of the ECG wave corresponds to the repolarization of Purkinje fibres in the ventricles?P waveQ waveR waveS waveT wave

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BlackTom AI · Accepted Answer

Question restatement: The prompt asks which portion of the ECG wave corresponds to the repolarization of Purkinje fibres in the ventricles, with the options: P wave, Q wave, R wave, S wave, T wave.
Option 1: P wave. The P wave represents atrial depolarization, not ventricular repolarization. It occurs before the ventricles contract and is generated by the atrial myocardium.
Option 2: Q wave. The Q wave is the initial downward deflection of the QRS complex and reflects the initial depolarization of the interventricular septum, not repolarization of Purkinje fibers.
Option 3: R wave. The R wave is the first positive deflection in the QRS complex and corresponds to ventricular depolarization, specifically the main mass of ventricular muscle, rather than repolarization.
Option 4: S wave. The S wave is the downward deflection following the R wave within the QRS complex and also relates to ventricular depolarization. It does not represent ventricular repolarization.
Option 5: T wave. The T wave represents ventricular repolarization. Although Purkinje fibers contribute to the overall ventricular conduction and repolarization processes, the T wave is the ultrasound of repolarization of the ventricles as a whole, including the purkinje-activated ventricular myocardium.
In summary, among the provided choices, the T wave is the component associated with ventricular repolarization, which includes the repolarization of the Purkinje-activated ventricular fibers. Other options correspond to atrial activity or to depolarization events within the ventricles rather than their repolarization.

Question at position 10 Which portion of the ECG wave corresponds to the repolarization of Purkinje fibres in the ventricles?P waveQ waveR waveS waveT wave

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Question at position 10 Which portion of the ECG wave corresponds to the repolarization of Purkinje fibres in the ventricles?P waveQ waveR waveS waveT wave

查看解析

登录即可查看完整答案

类似问题

Match the number on the wave to its function. 1: Number 5 on the wave represents... ____ 2: Number 3 on the wave represents... ____

Question at position 29 The _____________ wave represents the repolarization of the ventricles.TRPQ

Which letter marks the T wave?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

更多留学生实用工具

希望你的学习变得更简单

Match the number on the wave to its function. 1: Number 5 on the wave represents... 2: Number 3 on the wave represents...