Circulatory System

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Across
  1. 2. a blood clot
  2. 4. low levels of sugar in the bloodstream
  3. 6. low blood pressure
  4. 9. disease of the heart
  5. 10. raised blood pressure
  6. 14. a sac that surrounds the heart to lubricate and protect
  7. 16. high levels of sugar  in the bloodstream
  8. 18. slow heart rate
  9. 19. formation of a blood clot which can block blood flow through a blood vessel
  10. 20. lining of the heart forming the valves
Down
  1. 1. decrease in the number of white blood cells
  2. 3. enlarged heart
  3. 5. blue skin due to lack of oxygen
  4. 7. fast heart rate
  5. 8. inflammation of a vein
  6. 11. the muscular tissue of the heart
  7. 12. lack of clotting cells (thrombocytes)
  8. 13. excessive bleeding, escape of blood from a ruptured blood vessel
  9. 15. collection of blood in tissues causing a swelling
  10. 16. low levels of oxygen in the blood
  11. 17. relating to the heart and blood vessels