Hearts and Lungs

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Across
  1. 5. A crucial one way heart valve located on the right side of the heart.
  2. 7. Non- Oxygenated blood
  3. 8. The only non-oxygenated artery
  4. 10. Command centre of the nervous system.
  5. 12. Oxygenated blood
  6. 13. Two lowered thick-walled muscle chambers of heart
Down
  1. 1. A common congenital heart defect where the aortic valve has only two leaflets instead of normal three.
  2. 2. pumps blood
  3. 3. Two upper chambers of the Heart
  4. 4. Two largest veins in the body
  5. 6. The body's largest artery
  6. 7. Membranous wall that divides the right and left ventricles of the heart.
  7. 9. provide oxygen
  8. 11. Specialised tissues comprising over 600 structures.