vi Guided Tour Real-World Applications The Clinical Case Study at the beginning of each chapter presents a real-world medical issue related to chapter content. The case study helps prospective healthcare workers understand how the concepts and ideas presented in the chapter are applied in the healthcare field. At the end of the chapter, questions in the Review revisit the case study, asking you to apply chapter content to propose answers to the questions presented in the case study. Meaningful Illustrations Colorful illustrations enhance comprehension of the complex structure of the human body and how various body systems work together. Numerous photographs show the effects of various diseases and disorders. Well-designed tables provide a concise summary of detailed information.