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Encyclopedia > Medial pterygoid plate
Medial pterygoid plate
Sphenoid bone. Anterior and inferior surfaces.
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Latin '
Gray's subject #35 151
System
MeSH [1]

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. Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... The sphenoid bone (os sphenoidale) is a bone situated at the base of the skull in front of the temporals and basilar part of the occipital. ... The Tensor veli palatini muscle (or Tensor palati) is a muscle of the human body. ...


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. Choana (plural: Choanae) latinization from the Greek choanē meaning funnel is the posterior nasal aperture. ...


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 of the vomer. Ala may refer to: Ala (mythology) in the Igbo mythology Ala (Roman military) American Library Association This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The vomer bone is one of the unpaired facial bones of the skull. ...


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. The palatine bone is a bone situated at the back part of the nasal cavity between the maxilla and the pterygoid process of the sphenoid. ... The sphenopalatine ganglion is a parasympathetic ganglion found in the spheno-maxillary fossa. ...


The pharyngeal aponeurosis is attached to the entire length of the posterior edge of the medial plate, and the Constrictor pharyngis superior takes origin from its lower third.


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. Anatomy of the human ear. ...


The anterior margin of the plate articulates with the posterior border of the vertical part of the palatine bone.


External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. SUNY Downstate Medical Center is Brooklyns only academic medical center. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


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Head Lecture notes (12467 words)
The sphincter is the orbicularis oculi (Clemente plate 462 fig.
The dilator is the levator palpebrae superioris (Clemente plate 509 fig.
The sphincter is the orbicularis oris (Clemente plate 462 fig.
Sphenoid bone (2712 words)
Its medial half forms the anterior boundary of the foramen lacerum, and presents the posterior aperture of the pterygoid canal for the passage of the corresponding nerve and artery.
Medial to this is a triangular, serrated surface, for articulation with the frontal bone; this surface is continuous medially with the sharp edge, which forms the lower boundary of the superior orbital fissure, and laterally with the serrated margin for articulation with the zygomatic bone.
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 of the vomer.
  More results at FactBites »

 
 

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