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Mode of action of heart MCQ App Download | O Level Biology Apps (iOS & Android)

O Level Biology MCQ: Complete Course

Mode of action of heart MCQ App Download & PDF e-Book | 1644

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MCQ: 1644

Backflow of blood into the atria is prevented through

  1. bicuspid valves
  2. tricuspid valves
  3. mitral valve and the chordae tendineae
  4. semi lunar valves

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O Level Biology Apps (Android & iOS)

O Level Biology App

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9th Grade Biology Apps (Android & iOS)

9th Grade Biology App