Exam-style question
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What does the P wave in a normal ECG waveform represent?.
- A.Atrial depolarization
- B.Ventricular depolarization
- C.Atrial repolarization
- D.Ventricular repolarization
Model answer
What a good answer should say
- Atrial depolarization
Explanation
Why this works
The P wave corresponds to the electrical activity associated with atrial depolarization, which is the first phase of the cardiac cycle.
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