Exam-style question
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During which stage of the cardiac cycle does the QRS complex occur?.
- A.Atrial contraction
- B.Ventricular contraction
- C.Atrial relaxation
- D.Ventricular relaxation
Model answer
What a good answer should say
- Ventricular contraction
Explanation
Why this works
The QRS complex occurs during ventricular contraction, as it represents the depolarization of the ventricles leading to their contraction.
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