What does the P wave of a normal mammalian electrocardiogram represent?
Correct answer: C. Atrial depolarization
- A. Ventricular depolarization
- B. Atrial repolarization
- C. Atrial depolarization
- D. Ventricular repolarization
Explanation
The P wave represents the spread of electrical excitation through the atrial myocardium, causing atrial depolarization. Ventricular depolarization produces the QRS complex, while ventricular repolarization produces the T wave.
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