What is pterygoid Lamina?
Either of two plates, the internal and external, that make up the pterygoid process of the sphenoid bone. They are areas of attachment for the muscles of mastication. See also: lamina.
What are the pterygoid processes?
The pterygoid processes or pterygoid plates are paired posteroinferior projections of the sphenoid bone.
What does pterygoid mean?
Definition of pterygoid (Entry 1 of 2) : of, relating to, or lying in the region of the inferior part of the sphenoid bone of the vertebrate skull. pterygoid. noun.
What is the pterygoid canal?
The pterygoid canal, also known as the Vidian canal, is a foramen in the base of skull, located in the pterygoid process of the sphenoid bone, superior to the pterygoid plates, and inferomedial to the foramen rotundum.
What is the Infratemporal fossa?
The infratemporal fossa is a complex space of the face that lies posterolateral to the maxillary sinus and many important nerves and vessels traverse it. It lies below the skull base, between the pharyngeal sidewall and ramus of the mandible.
What is the main action of medial pterygoid?
The medial pterygoid muscle attaches to the angle of the mandible and to the lateral pterygoid plate to form a sling with the masseter muscle that suspends the mandible (Figure 6-19). The primary action is to elevate the mandible and laterally deviate it to the opposite side.
What Innervates the medial pterygoid?
Medial pterygoid muscle is innervated by the medial pterygoid branches of mandibular nerve (CN V3), one of the three divisions of trigeminal nerve (CN V).
What Innervates medial pterygoid?
Where do Pterygoid muscles insert?
Lateral pterygoid muscle
| Origin | Superior head: Infratemporal crest of greater wing of sphenoid bone Inferior head: Lateral surface of lateral pterygoid plate of sphenoid bone |
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| Insertion | Superior head: Joint capsule of temporomandibular joint Inferior head: Pterygoid fovea on neck of condyloid process of mandible |
What runs in pterygoid canal?
It transmits the nerve of pterygoid canal, (Vidian nerve), the artery of the pterygoid canal (Vidian artery), and the vein of the pterygoid canal (Vidian vein).
What is the medial pterygoid?
(redirected from lamina medialis processus pterygoideus ossei) [TA] the smaller and more medial of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side, ending inferiorly in the pterygoid hamulus.
What is the action of the lateral pterygoid?
Action: Elevates mandible, closes jaw, helps lateral pterygoids in moving the jaw from side to side The medial pterygoid is a thick, quadrilateral muscle.
Why is it called the pterygoid bone?
In many mammals it remains as a separate bone called the pterygoid bone . Its name is Greek for “resembling a fin or wing”, from its shape. The medial pterygoid plate (or medial pterygoid lamina) of the sphenoid bone is a horse-shoe shaped process that arises from its underside.
Where is the pterygoid plate located?
the smaller and more medial of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side, ending inferiorly in the pterygoid hamulus.
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