PART I: FUNDAMENTALS OF PHYSIOLOGY.- 1. Animals and Environments: Function on the Ecological Stage.- 2. Molecules and Cells in Animal Physiology.- 3. Genomics, Proteomics, and Related Approaches to Physiology.- 4. Physiological Development and Epigenetics.- 5. Transport of Solutes and Water.- PART II: FOOD, ENERGY, AND TEMPERATURE.- 6. Nutrition, Feeding, and Digestion.- 7. Energy Metabolism.- 8. Aerobic and Anaerobic Forms of Metabolism.- 9. The Energetics of Aerobic Activity.- 10. Thermal Relations.- 11. Food, Energy, and Temperature at Work: The Lives of Mammals in Frigid Places.- PART III: INTEGRATING SYSTEMS.- 12. Neurons.- 13. Synapses.- 14. Sensory Processes.- 15. Nervous System Organization and Biological Clocks.- 16. Endocrine and Neuroendocrine Physiology.- 17. Reproduction.- 18. Integrating Systems at Work: Animal Navigation.- PART IV: MOVEMENT AND MUSCLE.- 19. Control of Movement: The Motor Bases of Animal Behavior.- 20. Muscle.- 21. Movement and Muscle at Work: Plasticity in Response to Use and Disuse.- PART V: OXYGEN, CARBON DIOXIDE, AND INTERNAL TRANSPORT.- 22. Introduction to Oxygen and Carbon Dioxide Physiology.- 23. External Respiration: The Physiology of Breathing.- 24. Transport of Oxygen and Carbon Dioxide in Body Fluids (with an Introduction to Acid-Base Physiology).- 25. Circulation.- 26. Oxygen, Carbon Dioxide, and Internal Transport at Work: Diving by Marine Mammals.- PART VI: WATER, SALTS, AND EXCRETION.- 27. Water and Salt Physiology: Introduction and Mechanisms.- 28. Water and Salt Physiology of Animals in Their Environments.- 29. Kidneys and Excretion (with Notes on Nitrogen Excretion).- 30. Water, Salts, and Excretion at Work: Mammals of Deserts and Dry Savannas.