This collection of 60 cases covers the clinically relevant physiology topics that first- and second-year medical students need to know for a first-year physiology course and for USMLE Step 1. Organized by body system, the book presents case studies with questions and problems, followed by complete explanations and solutions including diagrams, graphs, and charts. This edition includes four new cases and more illustrations and flowcharts. A companion Website will offer the fully searchable online text.