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Information about Air Sac

Air sac is an anatomical term with several meanings:
  • Pulmonary alveolus, informally known as an air sac, one of innumerable spherical outcroppings of the respiratory bronchioles in the mammalian lung, the primary sites of gas exchange with the blood
  • an anatomical structure continuous with the trachea found in some insects which can be used to actively pump air throughout the body
  • an anatomical structure unique to the dinosaur and bird respiratory systems that allows unidirectional flow of air into the lungs and through the body
alveolus (plural: alveoli, from Latin alveus, "little cavity"), is an anatomical structure that has the form of a hollow cavity. Mainly found in the lung, the pulmonary alveoli
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lungs flank the heart and great vessels in the chest cavity.[1]]]

The lung is the essential respiration organ in air-breathing vertebrates, the most primitive being the lungfish.
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299: 558-560.
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Dinosauria *
Owen, 1842

Orders & Suborders
  • Ornithischia
  • Cerapoda
  • Thyreophora
  • Saurischia

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Herod_Archelaus


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