The pharyngobasilar fascia is a
fascia
A fascia (; : fasciae or fascias; adjective fascial; ) is a generic term for macroscopic membranous bodily structures. Fasciae are classified as superficial, visceral or deep, and further designated according to their anatomical location.
...
of the
pharynx
The pharynx (: pharynges) is the part of the throat behind the human mouth, mouth and nasal cavity, and above the esophagus and trachea (the tubes going down to the stomach and the lungs respectively). It is found in vertebrates and invertebrates ...
.
It is situated between the mucous and muscular layers of the pharynx. It is formed as a thickening of the pharyngeal mucosa superior to the
superior pharyngeal constrictor muscle
The superior pharyngeal constrictor muscle is a quadrilateral muscle of the pharynx. It is the uppermost and thinnest of the three pharyngeal constrictors.
The muscle is divided into four parts according to its four distincts origins: a pterygop ...
. It attaches to the
basilar part of occipital bone, the
petrous part of the temporal bone
The petrous part of the temporal bone is pyramid-shaped and is wedged in at the base of the skull between the sphenoid and occipital bones. Directed medially, forward, and a little upward, it presents a base, an apex, three surfaces, and three ...
(medial to the
pharyngotympanic tube), the (posterior border of the)
medial pterygoid plate
The pterygoid processes of the sphenoid (from Greek ''pteryx'', ''pterygos'', "wing"), one on either side, descend perpendicularly from the regions where the body and the greater wings of the sphenoid bone unite.
Each process consists of a med ...
, and the
pterygomandibular raphe
The pterygomandibular raphe (pterygomandibular fold or pterygomandibular ligament) is a thin tendinous band of buccopharyngeal fascia. It is attached superiorly to the pterygoid hamulus of the medial pterygoid plate, and inferiorly to the poster ...
. It diminishes in thickness inferiorly. Posteriorly, it is reinforced by the
pharyngeal raphe.
It reinforces the pharyngeal wall where muscle is deficient.
Additional images
File:Slide1kuku.JPG, Larynx, pharynx and tongue. Deep dissection, posterior view.
File:Slide2kuku.JPG, Larynx, pharynx and tongue. Deep dissection, posterior view.
File:Slide3kuku.JPG, Larynx, pharynx and tongue. Deep dissection, posterior view.
See also
*
Buccopharyngeal fascia
References
External links
*
* http://ect.downstate.edu/courseware/haonline/labs/l31/100101.htm
* http://www.instantanatomy.net/headneck/areas/phpharyngobasilarfascia.html
Fascial spaces of the head and neck
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