Basic avian pulmonary design and flow-through ventilation in non-avian theropod dinosaurs

  title={Basic avian pulmonary design and flow-through ventilation in non-avian theropod dinosaurs},
  author={P. O'Connor and Leon P. A. M. Claessens},
  • P. O'Connor, Leon P. A. M. Claessens
  • Published 2005
  • Medicine, Biology
  • Nature
  • Birds are unique among living vertebrates in possessing pneumaticity of the postcranial skeleton, with invasion of bone by the pulmonary air-sac system. The avian respiratory system includes high-compliance air sacs that ventilate a dorsally fixed, non-expanding parabronchial lung. Caudally positioned abdominal and thoracic air sacs are critical components of the avian aspiration pump, facilitating flow-through ventilation of the lung and near-constant airflow during both inspiration and… CONTINUE READING
    167 Citations

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