Principles of Medical Physiology ? A Companion Guide is a revised and improved version of ?Questions and Answers in Medical Physiology?, first published in the year 2003 and well received by undergraduate students. This book is divided into 12 sections comprising long- and short-answer questions with to-the-point answers. This should help students understand the core concepts of physiology and thereby, prepare thoroughly for examinations. At the end of each section of this book, there are multiple choice questions (MCQs) for familiarizing students to the type of questions asked in examinations.Salient features of the book Over 1200 questions covering the syllabus in a systematic and student-friendly manner. Important questions and their answers that would prepare students for examination. Care has been taken to ensure that the answers to the questions are easy to memorize and reproduce in examinations. Flow charts, tables and illustrations are inserted wherever necessary for elucidating the concepts. Multiple-choice questions are placed at the end of every section.