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29 Cards in this Set
- Front
- Back
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What never innervates the temporalis?
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motor branches of CN V3- mandibular nerve (somatic efferent, motor out)
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what is the superior border of the infratemporal fossa?
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zygomatic arch
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what is the inferior border of the infratemporal fossa
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medial pterygoid on mandible
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what is the lateral border of the infratemporal fossa?
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medial surface of the ramus of mandible
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what is the medial border of the infratemporal fossa?
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lateral pterygoid plate
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whats the anterior border of the infratemporal fossa?
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maxilla
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whats the posterior border of the infratemporal fossa?
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the tympanic plate/ mastoid/styloid processes
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what is the action and innervation of the masseter muscle?
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CN V3
elevate/protrude mandible (deep fibers retrude) |
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whats the action and innervation of the lateral pterygoid muscle?
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CN V3
this protrudes the mandible, depresses the chin, and side to side motion of mandible |
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whats the action and innervation of the medial pterygoid muscle?
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CN V3
this is used to elevate and protrude the mandible. also side to side |
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what are the 2 branches off the 1st part of the maxillary artery (the mandiubular portion)
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the middle meningeal artery
inferior alveolar artery |
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where does the middle meningeal artery pass relative to the auriculotemporal nerve?
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the auriculotemporal nerve divides and goes around the artery...enclosing it
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what branches off the 2nd part of the maxillary artery (the pterygoid part)
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the muscular branches
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what branches off the 3rd part of the maxillary artery (the pterygopalatine part)
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maxilla, nasal cavity, and more are fed by this 3rd part of the maxillary artery
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what does the pterygoid venous plexus drain?
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this drains the area supplied by the maxillary artery
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what do the maxillary and superficial temporal vein come together to form?
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the retromandibular vein
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what does the pterygoid venous plexus communicate with?
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this communicates with the facial vein via the cavernous sinus
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when doe CN V3 enter the infratemporal fossa?
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at the foramen ovale
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What does the auriculotemporal nerve provide fibers to? what kind of information is carried?
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Somatic afferent (touch and stuff)
to auricle/tympanic membrane, external acoustic meatus, skin, tmj, parotid gland POSTganglionic parasympathics to partoid gland |
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what carries postganglionic parasympathetics to the partoid gland?
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this is done by CN V3 on the auriculotemporal nerve
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What does the inferior alveolar nerve provide fibers to? what kind of information is carried?
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this is provided to the mandibe
provides SA (sensory stuff) from teeth/associated tissues, and skin over mandible |
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what does the lingual nerve innervate? where does it come from? what does it carry?
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this is a branch of CN V3
this carries sensory from anterior 2/3rds of the tounge. carries Chorda Tympani (CN VII, part of taste) |
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what does the buccal nerve innervate? where does it come from?
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this comes from CN V3
innervates the skin/mucosa of cheek. Sensory only. NOT motor |
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what is contained within the Otic Ganglion?
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postganglionic parasympathetic cell bodies
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What are the inputs to the Otic Ganglion?
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Preganglionic Parasympathetics from CN IX (lesser petrosal nerve)
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What are the outputs from the Otic Ganglion?
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postganglionic fibers to partoid gland via auriculotemporal nerve
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What travels on the Chorda Tympani?
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Taste (SA) from anterior 2/3rds of tounge
and VE (postganglionic parasympathetics from submandibular ganglion) |
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what type of joint is the TMJ?
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a synovial joint
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What part of the TMJ restricts posterior movement of the mandible?
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the Lateral (temporomandibular) ligament
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