Infratemporal Fossa and Parotid
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| Superior mental spines are the attachment for what muscle? Inferior mental spines? | Superior: Genioglossus. Inferior: Geniohyoid
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| TMJ description | Upper and Lower synovial cavity separated by a articular disc. Weakest stabilizing element is joint capsule.
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| Name ligaments that stabilize the TMJ | Lateral TM ligamnet, sphenomandibular and stylomandibular which guides the jaw in the process to rotate
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| Occlusal plane | Where teeth meet one another
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| What vessels are found in the infratemporal fossa? | Maxillary artery, middle meningeal and auriculotemporal nerve
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| Auricolutemporal nerve | Sensory nerve to the fascia of partoid gland and to side of temple and around the ear
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| Petrotempanic fissure contents | Fibers attach here and chroda tympani comes out
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| What part of the cavity of TMJ does translation take place? Rotation? | Upper cavity: Translation. Lower Cavity: Rotation for elevation and depression
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| Masseter muscle action | Closer of the mouth and will pull jaw up (Oblique and Vertical portion)
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| Temporalis fascia role | Holds zygomatic arch in place and opposes forces of masseter muscle
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| Buccinator muscle role | Responsible for keeping food on teeth as we chew and getting excess food out of lateral side of mouth. Motor: Facial nerve. Sensory: Buccal branch of Mandibular
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| Lateral Pterygoid muscle | Attaches to lateral side of lateral plate. Superior head attached at capsule. Inferior head attached at neck. Protrudes mandible and keeps meniscus in place
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| Medial Pterygoid muscle | Attaches to medial side of lateral plate. Fibers join up with masseter muscle
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| What nerves provide proprioception to TMJ? | Masseteric and auriculotemporal nerve
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| Parotid gland | Medial component invades infratemporal fossa. Sits in a bed. Sensory to fascia from auriculotemporal nerve.
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| Otic ganglion | Post-synaptic parasympathetic that makes the parotid gland squirt
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| What nerve carries the pre-synaptic fibers to otic ganglion? | Glossopharyngeal nerve
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| Lesser pertrosal nerve routes | Can go through the foramen ovale, foramen spinosum or its own unnamed foramen. Finds otic ganglion, synapses then makes it squirt
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