This textbook is written with a view to acquaint the readers of Home Science (Community Science), and Allied Health Sciences on basics of human physiology.The book contains 12 chapters. The first chapter deals with physiology, followed by cell physiology, blood, circulatory system, respiratory system, digestive system, reproductive system, nervous system, endocrine system, skeletal system and integumentary system. The chapter on cell physiology is written with a view to providing information on cell biology, primarily necessary at the beginning of the subject of physiology. Selective information collected for this book from different sources and presented in a lucid manner of clear understanding for the beginners.