Name __________________________________________________ Block ________

CHAPTER 43 – Immune System Campbell Biology, 9th Ed.

1. Contrast innate immunity vs. adaptive immunity.

2. Describe the various barrier (nonspecific) defenses that your body has against foreign invaders.

3. Describe the role of these phagocytic cells:

a. neutrophils

b. macrophages

c. dendritic cells

d. natural killer cells

4. What is the role of the lymphatic system in the innate immune defense?

5. Interferons can be used to treat various disorders or diseases such as multiple sclerosis, cancer or hepatitis. What are the various functions of interferons?

6. Describe the inflammatory response (include the roles of histamine, mast cells and cytokines).

7. Where are T cells and B cells produced?

8. What are antigens? How are they recognized by immune system cells?

9. What are memory cells? What is their function?

10. Compare a primary immune response to a secondary immune response.

11. Compare the humoral immune response to a cell-mediated immune response.

12. Label the components in the following diagram that shows a helper T cell being activated by interaction with an antigen-presenting cell and the helper T cell’s central role in activating both humoral and cell-mediated immunity.

13. Examine Figure 43.17 on page 941. How do Cytotoxic T cells kill infected host cells?

14. How are B cells, plasma cells and antibodies related?

15. What is the role of antibodies in the immune system?

16. Compare passive vs. active immunity.

17. How do vaccines work? What are the various sources of antigens used to make vaccines today?

18. How do physicians minimize rejection after tissue or organ transplants?

19. What causes allergies? What is anaphylactic shock?

20. What are autoimmune diseases?

21. What type of cell do HIV viruses infect? Why is AIDS such a deadly disease?