Reptilian Lungs

1 Introduction. - 1. 1 Functional Anatomy and the Evolution of the Respiratory System. - 1. 2 Descriptive Classification of Lung Types. - 2 Morphometry of Reptilian Lungs, with Special Emphasis on the Comparison of the Unicameral Lungs of the Teju, Tupinambis nigropunctatus Spix, and the Multicameral Lungs of the Savanna Monitor, Varanus exan- thematicus (Bosc). - 2. 1 Animals. - 2. 2 Symbols and Definitions. - 2. 3 Morphometric Methods. - 2. 4 Morphometric Results. - 2. 5 Discussion: Morphometric Comparison of Reptilian Lungs. - 2. 6 Summary. - 3 The Pump Mechanism, Its Combination with the Exchanger, and Breathing Strategy. - 3. 1 Symbols and Definitions. - 3. 2 The Pump. - 3. 3 Breathing Strategy and the Pump. - 3. 4 Interaction of the Exchanger and Pump in Breathing Strategy: the Ideal High-performance Lung. - 4 Speculations on the Evolution of the Amniote Respiratory System. - 4. 1 Breathing Mechanism in the First Reptiles. - 4. 2 Lung Structure in the First Reptiles. - 4. 3 Hollow Bones as Indicators of Lung Structure. - 4. 4 Possible Respiratory Function of the Gastralia. - 4. 5 Possible Role of the Ornithischian Pelvis in Breathing. - 4. 6 Broadened Ribs and Alternative Breathing Mechanisms. - 4. 7 Implications for the Evolution of Lung Structure. - 5 Summary. - References.