This best-selling textbook is intended primarily for students who plan to make a career in some field of medicine. With over 220 images and tables, the authors rely on basic physics principles to promote an understanding of the function of the various organ systems of the body. Although it was written primarily as a text for students who have some knowledge of elementary physics (the mathematics is at the algebra level), it is understandable to any person who is curious about the workings of the body. Includes an Instructor's Guide with answers to all of the problems in the book.