Home/
Competitive Exams/
NEET/
Biology/
Body Fluids and Circulation/
Question 9704
NEET Biology · Hard

Body Fluids and Circulation: Cardiac Cycle MCQ

Solve this quality-checked NEET multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Cardiac CycleHardQuestion 9704

Question

The QRS complex in an ECG is most directly associated with:

  1. A
    Ventricular depolarisation
    Correct
  2. B
    Atrial depolarisation
  3. C
    Ventricular repolarisation only
  4. D
    Valve opening only

Correct answer

Ventricular depolarisation

Explanation

QRS marks electrical activation of ventricles, leading to ventricular systole.

Review Body Fluids and Circulation notesStart timed chapter practice