A book of 1,000 5-part MCQs with full descriptive answers, arranged in 20 chapters to correspond to the 17th edition of Davidson's Principles and Practice of Medicine. Chapters cover all body systems. The answers are not just true/false but also give clear explanations, so that the reader who gets an answer wrong can find out why it is wrong. In this way the book helps students understand the subject, and retain their knowledge during revision.A new author has been enlisted and the questions have been tested to ensure that the level is appropriate for the medical student. This book can be used in two ways, students can read the appropriate part of Davidson's and test understanding with the MCQs, or they can attempt the MCQs, and then build on their knowledge by referring to Davidson's.