The fourth edition of NMS Physiology, a well respected and heavily used text, is written in an outline format useful to medical students who require a physiology course review and a comprehensive study tool for USMLE preparation. This one-volume, portable text contains 300 USMLE-style questions with answers and explanations. New to the edition are more questions, updated case studies in clinical decision making, concise outlines, and expanded diagrams. Sections devoted to endocrinology, acid-base, and pathophysiology also are especially helpful to students.