Reviewing Key Concepts

Short Answer On the lines provided, answer the following questions.

1. How does skin act as a nonspecific defense against pathogens?

2. How does the inflammatory response protect your body from pathogens?

3. What is permanent immunity?

Matching On the line provided, write the letter of the type of immunity thatmatches the description.

a. cell-mediated immunity b. active immunity c. humoral immunity d. passive immunity

4. Pathogens marked by antibodies are destroyed by phagocytes.

5. Killer T cells bind to infected cells, disrupting their cell membranes anddestroying them.

6. A vaccine is injected that enables the body to mount an immune responseagainst the pathogen.

7. Antibodies from another animal are injected into the bloodstream andremain for several weeks.

Reviewing Key Skills

Interpreting Graphics Use the diagram toanswer the following question.

8. What happens to the antibodyconcentration after the second exposure?Why does this change occur?

9. Applying Concepts After having chicken pox, a person carries millions of memory B cells. Why is it unlikely for this person to develop the disease again?

Name Class Date

Chapter 40 The Immune System and Disease Section Review 40-2

504 Teaching Resources /Chapter 40

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Intervalbetween

exposures

Primary and Secondary Immune Responses

Secondexposure

Firstexposure

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once

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