This book is primarily meant for Medical and Paramedical students according to syllabus. This book provides basic knowledge important to understand the subject. The aim of writing this book is to provide concise notes in easy language to the students with suitable emphasis on each topic. SALIENT FEATURES OF THE BOOK • The book makes the subject simple, concise and easily understandable to the readers. • The addition of tables, labeled diagrams helps in better understanding of the subject. • The systematic arrangement of content under the headings and subheadings enables the readers for easy