The pharyngobasilar fascia is part of the middle layer of deep cervical fascia. It is a thickening of the pharyngeal mucosa above superior pharyngeal constrictor muscle and attaches to the the skull base.
Pharyngobasilar and buccopharyngeal fascia both make up the pharyngeal fascia, and are considered part of the middle layer of deep cervical fascia.
The pharyngobasilar fascia provides structure to the lateral nasopharyngeal walls, and helps maintain patency of the airway.
The sinus of Morgagni is a defect in the anterior aspect of the pharyngobasilar fascia, containing the eustachian tube and levator veli palatini muscle.
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