A useful textbook for nurses, nursing students and students of allied paramedical courses. The book contains nineteen chapters. First three chapters deal with various chemical constituents of the body and their importance along with homeostasis, i.e., functioning together of different systems co-ordinated manner so as to maintain constant environment for the cells of the body. Rest of the chapters describe different systems. Anatomy and Physiology of a system is described in each chapter in simple and easy to understand language, with several simple diagrams. At the end of each chapter, common diseases and genetic disorders of each system are described briefly. Wherever possible, information is given in the form of Tables, Charts and Flow charts for easy understanding.