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23 Cards in this Set
- Front
- Back
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How many different joint cavities are associated with TMJ?
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2
one above the disc and one below |
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anatomy of TMJ:
-mandible: ... -temporal bone: ... and ... -cartilage: ... |
-condylar process
-mandibular fossa and articular tubercle (eminence) -articular disc |
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the temporalis muscle attaches to the ... of the mandible
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coronoid process
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the 2 synovial joints of TMJ:
-superior is the ... joint. it does ... and ... -inferior is the ... joint. it does ... and ... |
-gliding
-protrusion and retrusion -hinge -depression (opening) and elevation (closing) |
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what are the 4 muscles of mastication? (action: closing mouth)
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temporalis
masseter medial pterygoid lateral pterygoid |
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the muscles of mastication are innervated by
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V3 - mandibular
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which muscle of mastication is a "sling" with the masseter?
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medial pterygoid
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which muscle of mastication
-has 2 heads -does protraction, depression, and lateral movement -stabilizes the disc during retraction |
lateral pterygoid
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what 4 things are involved in opening the mouth? (moves the jaw in all 3 planes)
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-gravity
-suprahyoid mm. -infrahyoid mm. -(lateral pterygoid) |
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what are the 4 muscles that make up the infrahyoid ("strap")?
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omohyoid
sternohyoid sternothyroid thyrohyoid |
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infrahyoid muscles:
... and ... are superficial ... and ... are deep |
omohyoid and sternohyoid
sternothyroid and thyrohyoid |
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what artery supplies the muscles of mastication?
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maxillary artery
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maxillary artery:
-is a terminal branch of the ... artery -the branches are named for the ... it supplies -middle meningeal; and inferior alveolar (which runs to supply the ...) |
-external carotid
-muscle -teeth |
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maxillary artery comes off the ... artery
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external carotid
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the middle meningeal artery goes through what 'door'?
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foramen spinosum
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the inferior alveolar artery goes through what foramen?
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mandibular foramen
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V3 is motor/sensory/mixed?
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mixed
(V1 and V2 are sensory only) |
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which 4 nerves of V3 are sensory only?
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Buccal
auriculotemporal inferior alveolar lingual |
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the chorda tympani is a branch from ...
-it joins at the lingual nerve |
CN 7 - facial nerve
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nerve to mylohyoid comes off what nerve?
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inferior alveolar
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2 types of mandibular nerve lesions are...
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trigeminal neuralgia and lesion of the motor root of the mandibular nerve
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what does this describe?
-may result in weakness of muscles of mastication and a deviation of the jaw on protrusion towards the side of the injured nerve |
lesion of the motor root of the mandibular nerve
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what does this describe?
-sharp stabbing pain that radiates over the areas innervated by sensory branches of the maxillary or mandibular divisions of the trigeminal nerve. -may be caused by pressure on or interruption of the blood supply to the trigeminal ganglion |
trigeminal neuralgia (tic douloureux)
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