circulation: ecg

Question

Which ECG wave corresponds to ventricular depolarization?

RankGuru · Accepted Answer

1. **Electrocardiogram (ECG)**: A recording of the heart's electrical activity.
2. **Wave Components**:
   - **P wave**: Represents atrial depolarization (contraction of atria).
   - **QRS complex**: Represents **ventricular depolarization** (contraction of ventricles). It is much larger than the P wave because the ventricles have more muscle mass.
   - **T wave**: Represents ventricular repolarization (recovery phase).
3. **Note**: Atrial repolarization occurs during the QRS complex but is masked by the larger ventricular signal.

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circulation: ecg

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