Circulatory and Immune System

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Across
  1. 2. The transportation component of blood
  2. 4. The first form of defence in the immune system
  3. 7. The internal form of defence in the immune system
  4. 8. The largest artery in the body
  5. 9. What you look for when calculating heart rate
  6. 10. Erythrocytes are also called
  7. 11. Carries oxygenated blood from the lungs back into the heart
  8. 13. Form of measurement to calculate the speed of your heart
  9. 15. Leukocytes are also called
  10. 17. Clot Blood
  11. 18. Blood vessels that contain valves
  12. 20. The heart contains four and veins contain them
  13. 21. The lower chambers of the heart
Down
  1. 1. Where blood receives oxygen
  2. 3. The upper chambers of the heart
  3. 4. Carries deoxygenated blood from the heart to the lungs
  4. 5. Two types systole and diastole
  5. 6. Blood vessels that are one cell thick
  6. 12. Heart Attack, Epilepsy, and Diabetes are all forms of
  7. 14. Carry oxygenated blood from the heart to the body
  8. 16. A, B, AB, and O are the four main
  9. 19. The main pump in the circulatory system