Contents: Homeostasis: a framework for human physiology -- Chemical composition of the body -- Cell structure and protein function -- Movement of molecules across cell membranes -- Control of cells by chemical messengers -- Neuronal signaling and the structure of the nervous system -- Sensory physiology -- Consciousness, the brain, and behavior -- Muscle -- Control of body movement -- Endocrine system -- Cardiovascular physiology -- Respiratory physiology -- Kidneys and regulation of water and inorganic ions -- Digestion and absorption of food -- Regulation of organic metabolism and energy balance -- Reproduction -- Defense mechanisms of the body.