About Blood and Disease

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Across
  1. 3. disease-causing microorganisms
  2. 5. B-cells and Helper T-cells make up this system that helps us fight illness and keep us healthy
  3. 6. describes pathogens that spread through the air
  4. 8. tiny blood vessels that connect arteries and veins
  5. 11. blood cells that attack and destroy germs
  6. 12. a plant, bacteria, virus, or animal that is too small to be seen without a microscope
  7. 13. your body's blood system
  8. 15. blood vessels that carry blood toward your heart
Down
  1. 1. tiny blood cells that clot your blood
  2. 2. blood vessels that carry blood away from your heart to the rest of your body
  3. 4. contagious by spread from person to person
  4. 7. blood cells that carry oxygen to body cells and take away carbon dioxide
  5. 9. describes pathogens that spread through body fluid like blood
  6. 10. the liquid part of your blood
  7. 14. the virus that causes AIDS