This easy-to-read textbook introduces you to the human body as a living, functioning organism. You'll discover exactly what happens when normal body functions are upset by disease, and see how the body works to restore a state of balance and health. Concrete examples from everyday life help you understand how anatomy and physiology concepts relate to the real world for example, suntan and sunburn help you understand melanin and pigment cells. Material is presented in 17 self-contained chapters, each exploring a particular aspect of body function. This updated third edition is now easier to use than ever, featuring new, visually-appealing artwork and new Tools for Learning, including easy-to-spot learning objectives and review questions at the end of major sections in each chapter.