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Class 9 Biology MCQs – Certification Test 484

Pulmonary and Systemic Circulation Quiz (Question 484) – App & e-Book Download

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MCQ: 484

The period when both atria contracts and blood is pumped towards the ventricles is classified as

  1. atrial systole
  2. cardiac diastole
  3. atrial diastole
  4. cardiac systole

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