#respiratory_organ__respiratoryorgan  any organ involved in the process of respiration
  supertype:  #internal_organ__viscus  a main organ that is situated inside the body
  subtype:  #branchia  #lung  #book_lung
  part of:  #respiratory_system__respiratorysystem__systema_respiratorium__systemarespiratorium  the system for taking in oxygen and giving off carbon dioxide; in terrestrial animals this is accomplished by breathing
     part of:  #body__organic_structure__organicstructure__physical_structure  the entire physical structure of an organism (especially an animal or human being); "he felt as if his whole body were on fire"

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