1. Immune System Immune system

2. Nonspecific Defenses 1st line of Defense

3. Lysozyme Enzyme in tears and saliva

4. 2nd line of defense Inflammatory response Phagocytes video link

5. 2nd line of defense Serious Infection Increase WBC’s Fever Interferon

6. Specific Defenses

7. Lymphocytes White Blood Cells (WBC)

8. B-Lymphocytes Produce Antibodies Mature in Bone Marrow

9. Antibodies Y- shaped protein that binds to the antigen.

10. Antigen Substance that triggers the immune response.

11. Primary Immune Response Production of Antibodies from first exposure to antigen.

12. Secondary Immune Response Cells Remain after infection More powerful

13. Active Immunity Immunity produced by a vaccination.

14. Passive Immunity Antibodies from another organism.

15. T- Cell Identify foreign invader and relay message to b-cell

16. Helper T Cell Stimulates other cells to act

17. Killer T Cell Kills cancerous cells

18. Suppressor T Cell Slows down the production of b cells and t cells

19. Macrophage Big white blood cell Video link