Heart and circulatory system

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Across
  1. 3. ripple of pressure passing down the artery
  2. 4. instrument used to measure blood oxygen saturation
  3. 7. AV valve present on the right-side of the heart
  4. 9. Lower chamber of the heart containing pure blood
  5. 10. relaxation of the heart
  6. 12. blood vessel that carriers blood away from the heart
  7. 14. where oxygenation of blood takes place
  8. 15. ECG wave due to atrial systole
  9. 17. brings deoxygenated blood to the right side of the heart
  10. 19. only vein to carry oxygentaed blood
Down
  1. 1. ECG wave due to ventrical systole
  2. 2. wall separating right- and left- of the heart
  3. 5. contraction of the heart
  4. 6. AV valve present on the left-side of the heart
  5. 8. instrument used to hear heart sounds
  6. 11. takes blood to all parts of the body
  7. 13. blood vessel that carriers blood towards the heart
  8. 15. only artery to carry deoxygenated blood
  9. 16. ECG wave due to ventrical diastole
  10. 18. upper chamber of heart