The Circulatory System and Blood

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Across
  1. 5. carry deoxygenated blood
  2. 7. controls heart beat
  3. 10. heart valve
  4. 15. condition where the heart is in short oxygen supply
  5. 16. tissue fluid consists mainly of ... and white blood cells
  6. 17. blood vessel carries blood away from the heart
  7. 18. inorganic element in the blood
  8. 19. blood vessels assoicated with the kidney
  9. 20. measurement of heart activity
Down
  1. 1. when heart is relaxed
  2. 2. the circulatory system in humans
  3. 3. heart muscle
  4. 4. white blood cell
  5. 6. component of blood
  6. 7. left atrium recieves blood from the ... vein
  7. 8. high carbon dioxide concentration ... the heart rate
  8. 9. involved in blood clotting
  9. 11. the circulatory system in fish
  10. 12. supply blood to the heart
  11. 13. blood clot
  12. 14. the scientist who demonstrated the one-way action of valves
  13. 15. a type of blood vessel