Physiology serves as a fulfilment of a commitment to support Medical, Dental, and Veterinary Professors, as well as students, in providing a guiding light for the challenging path of competition. The primary objective of this book is to offer concise, digestible, and easily revisable information on clinical aspects for competitive examinations.This book has been designed with a broad audience in mind, including Medical, Dental, Pharmacy, and Veterinary students, who are preparing for competitive examinations such as the Council of Scientific Industrial Research - National Eligibility Test (CSIR NET), Indian Council of Agricultural Research Junior Research Fellowship, Senior Research Fellowship, and Post graduate (ICAR JRF/SRF/PG), as well as other examinations conducted by Public Service Commission. Additionally, it is useful for other competitive examinations like IAS, IPS, IFS examinations. This book serves as the first attempt to provide information on clinical aspects for Physiology in Medical, Dental, Pharmacy, and Veterinary fields, and we invite our colleagues and friends to provide feedback and suggestions for improvement.