Pterygomandibular raphe
Encyclopedia
The pterygomandibular raphe (pterygomandibular ligament) is a tendinous band of the buccopharyngeal fascia
, attached by one extremity to the hamulus of the medial pterygoid plate
, and by the other to the posterior end of the mylohyoid line
of the mandible.
Buccopharyngeal fascia
Parallel to the carotid sheath and along its medial aspect the prevertebral fascia gives off a thin lamina, the buccopharyngeal fascia, which closely invests the constrictor muscles of the pharynx and is continued forward from the constrictor pharyngis superior onto the buccinator.It is attached to...
, attached by one extremity to the hamulus of the medial pterygoid plate
Medial pterygoid plate
The medial pterygoid plate of the sphenoid is narrower and longer than the lateral pterygoid plate; it curves lateralward at its lower extremity into a hook-like process, the pterygoid hamulus, around which the tendon of the Tensor veli palatini glides.The lateral surface of this plate forms part...
, and by the other to the posterior end of the mylohyoid line
Mylohyoid line
Extending upward and backward on either side from the lower part of the symphysis of the mandible is the mylohyoid line, which is the origin of the mylohyoid muscle; the posterior part of this line, near the alveolar margin, gives attachment to a small part of the Constrictor pharyngis superior,...
of the mandible.
- Its medial surface is covered by the mucous membrane of the mouthMouthThe mouth is the first portion of the alimentary canal that receives food andsaliva. The oral mucosa is the mucous membrane epithelium lining the inside of the mouth....
.
- Its lateral surface is separated from the ramus of the mandible by a quantity of adipose tissueAdipose tissueIn histology, adipose tissue or body fat or fat depot or just fat is loose connective tissue composed of adipocytes. It is technically composed of roughly only 80% fat; fat in its solitary state exists in the liver and muscles. Adipose tissue is derived from lipoblasts...
.
- Its posterior border gives attachment to the superior pharyngeal constrictor muscleSuperior pharyngeal constrictor muscleThe superior pharyngeal constrictor muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.-Origin and insertion:The four parts of this muscle arise from:...
.
- Its anterior border attaches to the posterior edge of the buccinatorBuccinatorThe buccinator muscle is a muscle at the side of the face.Buccinator may also refer to:* Buccinator artery * Buccinator lymph node* Buccinator nerve * An ancient Roman buccina player...
.