In this chapter you will learn about the human immune system. You will identify nonspecific and specific defenses, including active, passive, and cell-mediated immunity. You will also review immune system disorders and diseases, most notably, AIDS.

In this chapter, you will: describe the function of the immune system identify three nonspecific defenses against infection list several specific defenses of the body recognize allergies and autoimmune disease as disorders of the immune system describe the effects of AIDS on the immune system