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The Passavant's Ridge-Velopharyngeal Isthmus Closure

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2011-07-18 10:16:32
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Rahmat Omar

Professor

Rahmat Omar
Material type: Patient
horizontal mucosal folds Passavant's ridge posterior pharyngeal wall velopharyngea closure constrictors soft palate muscles nasopharynx

In this video we can see the horizontal mucosal folds (Passavant's ridge) on posterior pharyngeal wall upon initiation of velopharyngea closure. It takes place during the act of swallowing which is followed by contractions of the underlying superior constrictors and soft palate muscles to complete its closure. It is preventing a regurgitation of fluid and food particles into the nasopharynx. Also upon saying the word "eeeeeee" the similar ridge is seen.



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