Across
- 3. lymph nodes found in the throat
- 4. clean debris out of lymph fluid
- 6. another name for the immune system
- 9. produces white blood cells
- 10. secrete antibiotics into alveoli
- 11. an enzyme that destroys bacteria
- 14. protein molecules that circulate through the body and attach to pathogens or other foreign substances
- 16. prevent bad bacteria from taking up residence in the colon
- 17. in the stomach; destroys bacteria
- 19. secrete tears
- 20. hinders the growth of pathogens that cannot reproduce in warmer temperatures
Down
- 1. the study of the immune system
- 2. macrophages in this destroy any bacteria that escape into the bloodstream
- 5. chemical that causes inflammation in infected areas
- 7. lymph nodes found in the small intestine
- 8. trap pathogens before they get into the lungs
- 12. organisms that cause disease
- 13. contain lysozyme
- 15. cells that fight off infection
- 18. filters out red blood cells