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posterior: mastoid process

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anterior: ramus of mandible, masseter and medial pterygoid

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superior floor of EAM

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medial: styloid process

gland is traversed by branches of facial nerve, arteries and veins

structures radiating from gland’s anterior margin

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parotid duct

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transverse facial artery

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branches of facial nerve

gland enclosed in parotid sheath

temporal branches: may have 2 communications with auriculotemporal nerve (V3)—secretory fibers to the parotid gland

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AT nerve: posterior to temporomandibular joint

external carotid artery: deeply placed and sheltered by ramus of mandible

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divides into two terminal branches: maxillary and superficial temporal

Temporal Region

consists of 2 fossae, temporal fossa and infratemporal fossa

temporal fossa: superior to zygomatic arch

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floor: gives rise to temporalis—surrounded by temporal lines

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bones: parietal bone, frontal bone, squamous part of temporal bone and greater wing of sphenoid bone

infratemporal fossa: situated inferior and deep to zygomatic arch

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contains two muscles of mastication, mandibular nerve and maxillary vessels

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lateral wall: ramus of mandible

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infratemporal fossa walls

laterally: ramus of mandible

anteriorly: posterior aspect of maxilla

superiorly: inferior orbital fissure

medially: pteygopalatine fossa

roof: flat and formed by greater wring of sphenoid

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contains two muscles of mastication, mandibular nerve, maxillary vessels

infratemporal and temporal fossae: communicate w/ each other thru interval b/w zygomatic arch and cranial vault

masseter: attached to zygomatic arch

mandible

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lingula: attachment of sphenomandibular ligament (also attached to spine of sphenoid)

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mandibular foramen: transmission of inferior alveolar nerves/vessels

inferior to lingula

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mylohoid groove: nerve and vessels to mylohyoid and anterior belly of digastric

masseteric nerve and vessels: pass thru mandibular notch

temporalis

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muscle of temporalis partly arise from fascia

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inserts into coronoid process of mandible

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anterior portion: thick

take vertical direction

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posterior portion: smaller

fibers take posterior sweep from coronoid process

temporalis fascia encloses fat pad continuous with buccal fat pad

inferior alveolar nerve

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enters mandibular foramen

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leads to inferior border of lateral pterygoid muscle

sends branches to teeth

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distal portion: mental foramen-->chin and lower lip

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anterior to mylohyoid nerve

lingual nerve

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applied to ramus of mandible

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