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Human Heart Study App Download | Class 9 Biology Study Apps (iOS & Android)

Class 9 Biology MCQs: Complete Course

Human Heart MCQs App Download & PDF e-Book | 854

MCQ: 854

The main veins through which deoxygenated blood is received by right atrium are

  1. right and left tricuspid
  2. upper and lower tricuspid
  3. superior and inferior vena cavae
  4. left and right vena cavae

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