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Transcript
Name _____________________________ Period _______ Ch. 43: Immune System 1. List the two lines of nonspecific defense mechanisms with examples of each. 2. What is meant by specific defense? 3. Give examples of “barrier defense.” 4. What is the role of phagocytotic leukocytes? 5. What is the role of the lymphatic system? 6. How does the lymphatic system aid in immunity? 7. Outline the significant steps that occur during an inflammatory response. 8. What is an antigen? 9. Identify several differences between the lymphocytes: a. B Lymphocytes (B Cells) b. T Lymphocytes (T Cells) 10. What is the role of MHC? 11. What is the role of cytotoxic T cells? Describe their mechanism of action. Name _____________________________ Period _______ Ch. 43: Immune System 12. What is the function of Helper T cells? 13. How do B cells become activated? 14. When B cells are activated, what do they do? 15. List and briefly describe four ways antibodies aid in immunity. 16. Why is a secondary response quicker and more robust than a primary response? 17. Define active immunity. 18. Define passive immunity. 19. What happens when you have an allergy? 20. Propose a possible reason why there may be a small percentage of people who have a natural immunity to HIV. 21. Why would giving someone with type A blood a transfusion of type B blood kill them?