Originally published in 1982, this book was designed to supplement Knut Schmidt-Nielsen's Animal Physiology.Originally published in 1982, this book was designed to supplement Knut Schmidt-Nielsen's Animal Physiology. Using Schmidt-Nielsen's comparative approach to the study of animal form function, the text pursues in greater detail topics introduced in Animal Physiology. Like the textbook, this Companion is organised according to major environmental features.Originally published in 1982, this book was designed to supplement Knut Schmidt-Nielsen's Animal Physiology. Using Schmidt-Nielsen's comparative approach to the study of animal form function, the text pursues in greater detail topics introduced in Animal Physiology. Like the textbook, this Companion is organised according to major environmental features.Originally published in 1982, this book was designed to supplement Knut Schmidt-Nielsen's Animal Physiology. Using Schmidt-Nielsen's comparative approach to the study of animal form function, the text pursues in greater detail topics introduced in Animal Physiology. Like the textbook, the Companion is organised according to major environmental features: oxygen, food and energy, temperature, and water, concluding with a section on movement and structure. The papers brought together in this volume were presented in July 1980 to honour Smith-Nielsen's sixty-fifth birthday, at the Fifth International Conference on Comparative Physiology, held in Sandbjerg, Denmark.List of participants; About this book; About Knut Schmidt-Nielsen; Part I. Oxygen: Overview; 1. A model for comparing gas-exchange systems in vertebrates Peter Scheid; 2. Mount Everest and beyond: breathing air Pierre Dejours; 3. The pathway for oxygen: lung to mitochondria Ewald R. Weibel; 4. A model for evaluating diffusion limitation in gas-exchange organs of vertebrates Johannes Piiper; 5. Oxygen transport in vertebrate blood: challenges Peter Lutz; 6. Strategies of blood acid-base control in ectothermlÓR