Infratemporal Fossa Flashcards
boundaries of infratemporal fossa
below middle cranial fossa
behind body of the maxilla
lateral to lateral pterygoid plate of sphenoid bone
contents of infratemporal fossa
muscles of mastication maxillary artery and vein pterygoid plexus of veins mandibular division of trigeminal nerve and its branches otic ganglion temporomandibular joint
muscles of mastication
masseter
temporalis
lateral pterygoid
medial pterygoid
innervation of muscles of mastication
mandibular division of trigeminal nerve
2 roots of which nerve encircle the middle meningeal artery
auriculotemporal nerve
auriculotemporal nerve provides sensory innervaiton to
skin on side of the head external ear external acoustic meatus tympanic membrane temporomandibular joint parotid gland
what nerve provides general sensation to anterior 2/3 of tongue
lingual N (joined by chorda tympani for taste innervation)
what nerve provides sensory innervation to teeth and gums of lower jaw
inferior alveolar nerve
what pathway does inferior alveolar nerve take through mandible
enters through mandibular foramen, emerges through mental foramen as mental nerve
branch of inferior alveolar nerve
nerve to mylohyoid
where is otic ganglion located
just below foramen ovale
between mandibular div of trigeminal N and tensor veli palatini muscle
otic ganglion receives preganglionic parasympathetic fibers from what nerve
glossopharyngeal N via lesser petrosal N
where do postganglionic fibers go from otic ganglion
join with auriculotemporal N to innervate parotid gland
what type of joint is the temporomandibular joint
synovial, bicondylar
lateral ligament of TMJ joint
articular tubercle of temporal bone to neck of mandible
prevents excessive forward, backward, and lateral movement
