Oropharyngeal isthmus

Infobox Anatomy
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Caption = Pharynx

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Caption2 = Dissection of the muscles of the palate from behind.
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DorlandsPre = i_14
DorlandsSuf = 12462851
The oropharyngeal isthmus (or isthmus of fauces) is the passage from the mouth to the oropharynx.

The Palatoglossus muscle closes the oropharyngeal isthmus.