Copyright ? 2011 Pearson Education, Inc. - 1 - Name _______________________ Period ___________ Chapter 43: The Immune System Our students consider this chapter to be a particularly challenging and important one. Expect to work your way slowly through the first three concepts. Take particular care with Concepts 43.2 and 43.3. It is rewarding, however, in Concept 43.4 to put your new knowledge to work and truly understand the devastation caused by the destruction of helper T cells by HIV. Overview The immune responses of animals can be divided into innate immunity and adaptive immunity. As an overview, complete this figure indicating the divisions of both innate and adaptive immunity. See page 930 of your text for the labeled figure.