Temporal and Infratemporal Regions Flashcards
what are the superior and posterior borders of the temporal fossa
superior and inferior temporal lines
what is the anterior border of the temporal fossa
frontal process of zygomatic bone and zygomatic process of frontal bone
what is the inferior border of temporal fossa
infratemporal crest deep to zygomatic arch
what is the floor of the temporal fossa
frontal, parietal, temporal and greater wing of sphenoid bone, includes pterion
where does the temporal fascia attach to
superior temporal line and inferiorly splits into 2 attaching to lateral and medial zygomatic arch
what does the temporal fascia do
provide resistance to masseter muscle by sitting on opposite side of zygomatic arch
what are the contents of the infratemporal fossa
inferior part of temporalis, lateral and medial pterygoids,
maxillary artery, pterygoid venous plexus,
mandibular, IAN, lingual, buccal, chorda tympani nerves and otic ganglion
what muscle does the maxillary artery pass through
between pterygoid and heads of lateral pterygoid
what nerve does the chorda tympani come from
facial nerve
what does the chorda tympani supply
taste to anterior 2/3rd of tongue
where does the chorda tympani run
in the lingual nerve
what is important to consider when injecting an IDB into the pterygomandibular space
pterygoid venous plexus - need to aspirate
where is the otic ganglion
on medial side of mandibular nerve and posterior to pterygoids
what nerves synapse in the otic ganglion
parasympathetic presynaptic fibres from glossopharyngeal nerve
what nerve supplies secretomotor fibres to the parotid gland
auriculotemporal nerve
what are the branches of the mandibular nerve to be aware of
auriculotemporal nerve, inferior alveolar nerve, lingual nerve, buccal nerve
what does the auriculotemporal nerve encircle
middle meningeal artery
what does the auriculotemporal nerve supply
auricle, temporal region, TMJ
what fibres does the auriculotemporal nerve pass to the parotid gland from the otic ganglion
postsynaptic parasympathetic secretomotor fibres
what does the IAN supply
mandibular teeth
what does the mental nerve supply
skin of lower lip and chin, gingiva of mandibular incisors
what does the nerve to mylohyoid supply
mylohyoid and anterior belly of digastric
what does the lingual nerve supply
sensory to anterior 2/3rd of tongue, floor of mouth, lingual gingiva
where does the lingual nerve and chorda tympani join
in infratemporal fossa
what are the branches of the maxillary artery
mandibular, pterygoid, pterygopalatine
what artery does the maxillary artery come from
external carotid artery
where does the mandibular part of maxillary artery change to pterygoid part
at the lateral pterygoid
where does the pterygoid part of the maxillary artery change to the pterygomaxillary part
once passing through the lateral pterygoid muscles
what branch of the maxillary artery does the middle meningeal artery come from
mandibular part
where does the middle meningeal artery enter the cranial cavity
foramen spinosum into middle cranial fossa
what does the middle meningeal artery supply
dura and part of cranium
what part of the maxillary artery does the IAN come off of
mandibular part
what do the deep temporal arteries supply
temporalis
what part of the maxillary artery do the deep temporal arteries come off of
pterygoid part
what part of the maxillary artery does the masseteric artery come off of
pterygoid part
what part of the maxillary artery does the buccal nerve come off of
pterygoid part
what does the buccal nerve supply
buccinator of cheek and buccal oral mucosa
what part of the maxillary artery does the superior alveolar arteries branch off of
pterygopalatine
where is the pterygoid venous plexus
between temporalis and pterygoid muscles (pterygomandibular space)
where is the pterygoid venous plexus
between temporalis and pterygoid muscles
what does the pterygoid plexus anastomose with
facial vein and cavernous sinus (via emissary veins)
what can the relationship of the facial vein, pterygoid plexus and cavernous sinus lead to
spread of infection (danger triangle)
