The Cardiovascular System

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Across
  1. 3. circulation from the heart to the lungs and back
  2. 8. bundle of cells that allow electrical conduction
  3. 9. lower heart chambers
  4. 12. wall between the left and right sides of the heart
  5. 15. protection against germs and a cardiovascular function
  6. 16. muscular tissue of the heart
  7. 18. smaller than veins yet bigger than capillaries
  8. 19. blood pressure exerted on the artery walls between beats
  9. 23. spontaneous contractions from muscle tissue
  10. 24. electrical signal passes through it delaying it a little
  11. 27. smaller than arteries yet bigger than capillaries
  12. 28. red blood cells
  13. 30. fibres that spread the electrical signal to the apex
Down
  1. 1. valves at the base of the arteries leaving the heart
  2. 2. concerns the liver
  3. 4. main artery out of the heart carries oxygenated blood
  4. 5. sac the heart sits in
  5. 6. equals the bicuspid valve
  6. 7. these form clots to prevent bleeding
  7. 10. the heart's natural pacemaker locates here
  8. 11. white blood cells
  9. 13. slow heart beat
  10. 14. blood pressure exerted on the artery walls on the beat
  11. 17. concerns the kidneys
  12. 20. fast heart beat
  13. 21. gaseous exchange happens in and out of these vessels
  14. 22. the vena cava from below
  15. 25. the vena cava from above
  16. 26. upper chambers of the heart
  17. 29. graphical output of the heart's electrical activity