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Flashcards in Infratemporal Region Deck (16)
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What nerve is most often affected in trigeminal neuralgia (tix douloureux)?



In Bells palsy, where is the facial nerve usually affected?

in the distal facial canal or at its exit from the stylomastoid foramen


What are the contents of the infratemporal fossa?

lateral pterygoid

medial pterygoid

maxillary artery


What groups of veins are found in the infratemporal fossa between the pterygoid muscles?

the pterygoid plexus of veins


What nerve passes behind the TMJ and over the zygomatic arch to supply sensory fibers to the lateral side of the head?

the superficial temporal artery


What are the boundaries of the infratemporal fossa?

anterior - posterior surface of the maxilla

posterior - styloid process of temporal bone

superior - infratemporal surface of grater wing fo the sphenoid

medial - lateral pterygoid plate of sphenoid

lateral - ramus of mandible


What is the origin and insertion of the lateral pterygoid muscle and the medial pterygoid muscle?

lateral - originates on the greater wing of sphenoid an dlateral surface of the lateral peterygoid plate. inserts into the capsule of the TMJ and the neck of the mandible

medial - originates on the medial surface of the lateral pterygoid plate and the maxillary tuberosity. inserts on the medial surface of the angle of the mandible


What is the lateral pterygoid's function? Medial?

lateral - protrudes and depresses the mandible and draw jaw to opposite side

medial - elevates and protrudes the mandible and draw the jaw to the opposite side.


What nerve carries postganglionic parasympathetic fibers to the parotid gland for salivery secretion? Where are the cell bodies?

the auriculotemporal nerve

cell bodies in the otic ganglion


What cranial nerve carries the preganglionic fibers to the otic ganglion?

CN 9 the glossopharyngeal


What are the 4 major sensory branches of the mandibular nerve?

inferior alveolar nerve (to teeth)

lingual nerve (to anterior 2/3 of tongue)

Buccal (to cheek)

auriculotemporal nerve (lateral side of the face)


The mental nerve is a terminal continuation of what nerve?

the inferior alveolar nerve


What nerve joins the linual nerve shortly after its origin from V3?

the Chorda tympani


To what ganglion does the chorda tympani nerve carry preganglionic parasympathetic fibers?

the submandibular ganlion


The taste fibers from the chorda tympani nerve have their cell bodies in what ganglion?

the geniculate ganglion