Following the same chapter organization as Guyton & Hall's Textbook of Medical Physiology, 11th Edition, this powerful tool provides an efficient and comprehensive review for the USMLE Step 1 exam. Over 1,000 Board-style questions, with detailed rationales, cover the most essential, need-to-know concepts in physiology. Includes thorough reviews of all major body systems, with emphasis on system interaction, homeostasis, and pathophysiology. Offers a comprehensive practice exam of over 1,000 questions in USMLE format. Includes answers and explanations for every question, as well as page references to the Guyton & Hall's Textbook of Medical Physiology. Follows a parallel chapter organization to Textbook of Medical Physiology. Provides all of the essential information needed to prepare for the physiology portion of the USMLE Step 1. Dedicates a brief section to helpful hints on preparing for the USMLE exam.