Whether you're preparing for a course exam or for the physiology portion of the USMLE Step 1, Guyton and Hall Physiology Review, 5th Edition , is your go-to resource for effective, efficient study . This practical review tool is an ideal companion to the world's foremost physiology textbook, offering more than 1,000 questions and answers to improve your understanding of this complex subject . Thorough reviews of all major body systems , with an emphasis on system interaction, homeostasis, and pathophysiology. More than 1,000 board-style questions and answers on the most essential, need-to-know concepts prepare you for your exams, including the physiology portion of the USMLE Step 1. Every question is cross-referenced and aligned to Guyton and Hall Textbook of Medical Physiology, 15th Edition , highlighting important concepts and featuring direct page references to specific questions. An eBook version is included with purchase. The eBook allows you to access all of the text and figures, with the ability to search, make notes and highlights, and have content read aloud.