Anatomy and Physiology is an accurate, up-to-date introductory text on human form and function. It presents a large, complex body of scientific knowledge in an easily understood conversational writing style. It focuses on concepts rather than just descriptions to help students unify information. Critical thinking learning opportunities are integrated throughout. The text uses a big picture theme of body function and also explains the body's homeostatic regulation. Many pedagogical features and hundreds of 4-color illustrations enhance the narrative. New illustrations have been added to the 5th edition. Revised Career Choices boxes end each unit, and current topics (such as anthrax and the human genome project) are addressed in feature boxes.