In Roiger/Bullock, connections are made between systems so that students learn how the body functions normally in homeostasis, and how disruption of homeostasis leads to disease and disorder. With a straight forward writing style that engages the reader directly, the authors explain difficult concepts in the context of routine activities, making concepts easier to grasp.A completely revised art program makes the content more inviting and facilitates student comprehension. Measureable learning outcomes throughout the textbook help direct students through the content so that there are no surprises. Anatomy & Physiology REVEALED icons indicate correlations throughout each chapter to relevant APR images and content. Roiger and Bullock’s text requires no prior knowledge of chemistry or cell biology, and is designed for a one-semester, entry-level A&P course.