1 Homeostasis: A Framework for Human Physiology 2 Chemical Composition of the Body 3 Cellular Structure, Proteins, and Metabolism 4 Movement of Molecules Across Cell Membranes 5 Control of Cells by Chemical Messengers 6 Neuronal Signaling and the Structure of the Nervous System 7 Sensory Physiology 8 Consciousness, the Brain, and Behavior 9 Muscle 10 Control of Body Movement 11 The Endocrine System 12 Cardiovascular Physiology 13 Respiratory Physiology 14 The Kidneys and Regulation of Water and Inorganic Ions 15 The Digestion and Absorption of Food 16 Regulation of Organic Metabolism and Energy Balance 17 Reproduction 18 Defense Mechanisms of the Body 19 Medical Physiology: Integration Using Clinical Cases