The medial pterygoid plate (or medial pterygoid lamina) 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 of the pterygoid fossa, the medial surface constitutes the lateral boundary of the choana or posterior aperture of the corresponding nasal cavity.
Superiorly the medial plate is prolonged on to the under surface of the body as a thin lamina, named the vaginal process, which articulates in front with the sphenoidal process of the palatine and behind this with the ala (wing) of the vomer.
The angular prominence between the posterior margin of the vaginal process and the medial border of the scaphoid fossa is named the pterygoid tubercle, and immediately above this is the posterior opening of the pterygoid canal.
On the under surface of the vaginal process is a furrow, which is converted into a canal by the sphenoidal process of the palatine bone, for the transmission of the pharyngeal branch of the internal maxillary artery and the pharyngeal nerve from the sphenopalatine ganglion.
Projecting backward from near the middle of the posterior edge of this plate is an angular process, the processus tubarius, which supports the pharyngeal end of the auditory tube.
The anterior margin of the plate articulates with the posterior border of the vertical part of the palatine bone.
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Other articles related to "pterygoid, pterygoid plate, medial, medial pterygoid":
... Pterygoid (/ˈtɛrɪɡɔɪd/ from the Greek for 'winglike') can refer to Pterygoid bone, a bone of the palate of many vertebrates Pterygoid processes of the sphenoid bone Lateral pterygoid plate Medial ...
... The pterygoid fovea (occasionally called pit or depression) is a concave surface on the uppermost medial side of the ramus of the mandible ... Located behind the mandibular notch and below of the condyloid process, the pterygoid fovea is located on the anterior surface of the neck of the mandible and serves for the attachment of ... Not to be confused with the pterygoid fossa of the sphenoid bone ...
... Jaw elevators the masseter, temporalis, medial pterygoid, and superior belly of the lateral pterygoid Jaw depressors the anterior digastrics, geniohyoid, mylohyoid ...
... The lateral pterygoid plate of the sphenoid (or lateral lamina of pterygoid process) is broad, thin, and everted its lateral surface forms part of the medial wall of the infratemporal ...
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