Immune System Crossword

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Across
  1. 4. Part of the immune system, consists of primary and secondary lymphoid organs
  2. 5. Another organ that functions like a barrier
  3. 7. Special immune system cells, matures in the thymus
  4. 10. Complex network of cells
  5. 11. Stores various immune cells, breaks down red blood cells, and stores and breaks down platelets
  6. 13. A subsystem that provides the general defense
  7. 14. An organ that functions like a barrier
  8. 15. Harmless bacteria, makes the spreading and entering of germs in body difficult
Down
  1. 1. Sponge-like tissue found inside bones
  2. 2. gland-like organ that turns into fatty tissue after it reaches maturity
  3. 3. Produced by the adaptive immune system
  4. 6. A subsystem that fights certain germs it has encountered before
  5. 8. Small tissues found along the lymphatic vessels, acts as a filter
  6. 9. Something the body doesn’t recognize as its own
  7. 12. Eating cells
  8. 13. The study of the immune system
  9. 16. Stop germs from entering the body through the mouth or nose