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| | ==Introduction== | | ==Introduction== |
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| − | Includes development and overview of the system
| + | The avian respiratory system contains some fundamental changes to the mammalian system. |
| − | (Paragraph format)
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| − | ==Structure== | + | ==Avian Nasopharynx and Oropharynx== |
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| | + | *The nostrils of the bird, which lead into the nasal cavity, may have a flap of horn to protect them, known as the ''Operculum''. |
| | + | *The Oral Cavity and the Nasal Cavity of the bird are interconnecting via a slit in the hard palate called the ''Choana''. |
| | + | *The |
| | + | [[Image:Avianheadsaggitalsection.jpg|right|thumb|350px|©Nottingham 2008 ''Saggital Section of an Avian skull showing the conchae.]] |
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| − | *
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| − | **
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| − | ***
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| | ==Function== | | ==Function== |