A framework for human physiology. Part One Basic cell functions: chemical composition of the body-- cell structure-- protein activity and cellular metabolism-- genetic information and protein synthesis-- movement of molecules across cell membranes. Part Two Biological control systems: homeostatic mechanisms and cellular communication-- neural control mechanisms-- the sensory systems-- principles of hormonal control systems-- muscle-- control of body movement-- consciousness and behaviour. Part Three Co-ordinated body functions: circulation-- respiration-- the kidneys and regulation of water and inorganic ions-- the digestion and absorption of food-- regulation of organic metabolism, growth, and energy balance-- reproduction-- defense mechanisms of the body. Appendices: answers to thought questions-- English and metric units-- electrophysiology equations-- outline of exercise physiology.