THE IMMUNE SYSTEM

4. Mast cell that prevents blood clotting
8. A mechanical barrier that prevents the transmission of diseases
11. Cell that stops immune response once completed
13. Mode of transmission that involves an infected person passing on a pathogen by touch
17. pathogen that spreads via spores
18. Cell that increases blood flow to site of injury
20. Mast cell that attracts phagocytes
22. Protein that binds pathogens together so they can dissolve and neutralise them
23. Cell that intensifies lymphocyte activity
24. Process where phagocytes surround, ingest and kill pathogens
25. Pathogen that can be treated with antibiotics
26. Group of cells that are activated in cell mediated immunity
27. group of cells that are activated in antibody mediated immunity

1. Type of pathogen that cause Malaria
2. Type of pathogen that infects host cells
3. Redness and pain are symptoms of this:
5. Protective reflex in the respiratory system
6. Diseases that can spread or are contagious are:
7. A phagocytic cell that is involved in cell mediated immunity
8. Cell that responds to re-exposure to pathogens
9. Barrier that kills bacteria in the digestive system
10. Viruses don't respond to antibiotics because they have a:
12. Protective reflex in the upper digestive system
14. Most important physical barrier to pathogens
15. Injects toxin into infected cells
16. One of the 5 symptoms of inflammation
19. An increase in body temperature that inhibits the growth of some bacteria
21. Cell that creates antibodies