High-Yield Gastrointestinal Tract is the fifth in a series of High-Yield Systems books by a best-selling medical textbook author that cover the basic sciences of the medical school curriculum using a systems-based approach. This approach helps students integrate their first two years' course material and offers excellent preparation for USMLE Step 1 and clinical rotations. Chapters review each basic science--embryology, gross anatomy, radiology, histology, physiology, pathology, microbiology, and pharmacology--as it relates to all the organs along the gastrointestinal tract. The book is replete with radiographs, CT and MRI scans, and micrographs of normal tissue and pathologic conditions.