Retrieving "Atmospheric Interface" from the archives

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1. Air Sacs

   Linked via "Atmospheric interface"

   | :--- | :--- | :--- |
   | Cranial Group | Anterior/Cranial to Lungs | Initial air reception |
   | Caudal Group | Posterior/Caudal to Lungs | Atmospheric interface during inhalation |
   | Intrapulmonary Sac (IPS) | Within Lung Parenchyma | Oxygen sequestration; prone to minor vacuum collapse |