Blood Cells

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Across
  1. 4. lack of oxygen;dark red
  2. 6. Protein that combines with 02
  3. 10. white blood cell that defends RBC
  4. 11. makes blood red/binding site of oxygen
  5. 12. formation of red blood cells
  6. 17. found in tissues
  7. 18. formation of all blood cells
  8. 19. contains enzymes that aid attack
  9. 20. hormone that increase RBC production
Down
  1. 1. formation of platelets]
  2. 2. first WBC to the site of infection
  3. 3. immunity (produces anti-bodies)
  4. 5. found in blood
  5. 7. red blood cell
  6. 8. decrease in the oxygen carrying by RBC
  7. 9. Fights off infection within the blood
  8. 13. Red blood cells live this long
  9. 14. formation of white blood cells
  10. 15. plenty of oxygen; bright red
  11. 16. responds to allergic response