This is an exploration of the principles of structure and function that govern people's lives. It is illustrated with medical artwork which captures the workings of the body in fine detail. All major organs and tissues are identified, and information on how each one works is revealed. The book covers the following topics: skeleton and muscles - the makers of movement; the heart - the vital pump; respiration - the breath of life; digestion - fuel for the machine; the brain - house of the human mind; skin and hair - the body's protective coverings; the senses - monitoring the outside world; and growth and development - from embryo to adult.