Offering a concise, highly visual approach to the basic science and clinical pathology of the digestive system, this updated volume in The Netter Collection of Medical Illustrations (the CIBA "Green Books") contains unparalleled didactic illustrations reflecting the latest medical knowledge. Revised by Drs. James C. Reynolds, Peter J. Ward, David A. Katzka, Henry P. Parkman, and Michele A. Young, Upper Digestive Tract, Part 1 of the Digestive System, Volume 9, integrates core concepts of anatomy, physiology, and other basic sciences with common clinical correlates across health, medical, and surgical disciplines. Classic Netter art, updated and new illustrations, and modern imaging continue to bring medical concepts to life and make this timeless work an essential resource for students, clinicians, and educators. - Provides a highly visual guide to the mouth, pharynx, esophagus, and stomach in a single source, from basic sciences and normal anatomy and function through pathologic conditions. - Offers expert coverage of key topics such as gastrointestinal manifestations of COVID; mechanisms of disease: functional disorders; diagnostic tests in gastric disorders: EndoFLIP of the esophagus; and endoscopic pyloromyotomy for gastroparesis. - Provides a concise overview of complex information by integrating anatomical and physiological concepts with practical clinical scenarios. - Compiles Dr. Frank H. Netter's master medical artistry-an aesthetic tribute and source of inspiration for medical professionals for over half a century-along with new art in the Netter tradition for each of the major body systems, making this volume a powerful and memorable tool for building foundational knowledge and educating patients or staff.