This textbook details the complex physiological processes of the gastrointestinal system. Written by Leonard R. Johnson, a recognized authority in the field, it delves into the functions of the digestive tract, from nutrient absorption to waste elimination. The book utilizes established physiological principles and research to explain the mechanisms underlying digestion, metabolism, and related disorders. It serves as a comprehensive resource for understanding the intricate workings of the GI system.

As part of the Mosby Physiology Monograph Series, this text is designed to provide in-depth coverage of a specific physiological system. The inclusion of online access suggests a modern pedagogical approach aimed at students and professionals seeking detailed knowledge. The author's established position in the field indicates a likely authoritative and comprehensive treatment of the subject matter, suitable for advanced study.