pharyngobasilar fascia pharyngobasilar fascia the pharyngobasilar fascia is a fascia of the pharynx. it is situated between the mucous and muscular layers of the pharynx. it forms as a thickening of the pharyngeal mucosa above the superior pharyngeal constrictor muscle. it attaches to the basilar part of occipital bone, the petrous part of the temporal bone (medial to the pharyngotympanic tube), the (posterior border of the) medial pterygoid plate, and the pterygomandibular raphe. it diminishes in thickness inferiorly. posteriorly, it is reinforced by the pharyngeal raphe. it reinforces the pharyngeal wall where muscle is deficient. pharyngobasilar fasciadetailsidentifierslatinfascia pharyngobasilarista98a05.3.01.027ta22858fma55074anatomical terminology additional images larynx, pharynx and tongue.deep dissection, posterior view. larynx, pharynx and tongue.deep dissection, posterior view. larynx, pharynx and tongue.deep dissection, posterior view.