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Anatomy Temporal and Infratemporal Fossae
KYCOM Block 3
123
Anatomy
Graduate
10/23/2012

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Term
what is theposterior and superior boundry of the temporal fossa
Definition
temporal lines
Term
what is the anterior boundry of the temporal fossa
Definition
frontal and zygomatic bones
Term
what is the lateral boundry of the temporal fossa
Definition
zygomatic arch
Term
what is the boundry of the temporal fossa
Definition
infratemporal crest of the spenoid
Term
what is forms the floor of the infratemporal fossa
Definition
frontal, temporal, sphenoid
Term
what are the contents of the temporal fossa
Definition
temporalis muscle and fascia, deep temporal nerves and vessels, superificial temporal vessels, auticouotemporal nerve
Term
what is the anterior boundry of the infratemporal fosssa
Definition
posterior aspect of the maxilla
Term
what is the medial boundry of the infratemporal fosssa
Definition
lateral petrygoig plate
Term
what is the lateral boundry of the infratemporal fosssa
Definition
ramus of the mandible
Term
what is the superior boundry of the infratemporal fosssa
Definition
inferior surface of the greater wing of sphenoid
Term
what is the posterior boundry of the infratemporal fosssa
Definition
tympanic plate and mastoid and styloid process of the temporal bone
Term
what is the inferior boundry of the infratemporal fosssa
Definition
site of attachment of the medial petrygoid to the mandible near its angle
Term
what type of joint is the temporomandibular joint
Definition
synovial, modified hinge
Term
what are the articular surfaces of the temporomandibular joint
Definition
mandibular condyle, mandibular fossa and atricular tubercle of the temporal bone
Term
what is the articular disc made of
Definition
fibrocartilage
Term
what does the articular disc do
Definition
divedes joint compartments of the temporomandibular joint into superior and inferior
Term
what is the function of the superior joint compartment of the temporomandibular joint
Definition
gliding movements of protrusion and retrusion
Term
what is the function of the inferior joint compartment of the temporomandibular joint
Definition
hinge movements of depression and elevation
Term
what does the articular disc attach, on what side
Definition
peripherally attached to joint capsule, anteromedially attaches tendon of lateral patrygoig
Term
what does the articular capsule connect to, on what side
Definition
superior to the articular tubercle and margins of th emandibular fossa, inferior to the neck of mandible
Term
what lines the joint capsule, in what location
Definition
synovial membrane above and below the articular disc, but does not cover it
Term
what are the temporomandibular joint ligaments
Definition
temporomandibular ligament (lateral ligament), stylomandibular ligament, sphenomandibular ligament
Term
what are the muscles of mastication
Definition
temporalis, masseter, medial petrygoid, lateral pateygoid
Term
what are the muscles of mastication innervated by
Definition
V3
Term
what is the origin of the temporalis
Definition
inferior temporal line, temporal fossa, temporalis fascia
Term
what is the insertion of the temporalis
Definition
coronoid process and anterior surface of the ramus of the mandible
Term
what is the innervation of the temporalis
Definition
anterior to posterior deep temporal nerves
Term
what are the actions of the temporalis
Definition
elevation of mandible, retrusion of mandible, right and left lateral movements
Term
what is the origin of the masseter
Definition
inferior border and medial surface of the maxillary process of the zygomatic bone and the zygomatic arch
Term
what is the insertion of the masseter
Definition
angle and lateral surface of the mandible
Term
what is the innervation of the masseter
Definition
masseteric nerve
Term
what are the actions of the masseter
Definition
elevation of mandible, retrusion of mandible, right and left lateral movements, protrusion of the mandible
Term
what is the origin of the superior head of the lateral petrygoid
Definition
infratemporal surface of the greater wing
Term
what is the origin of the inferior head of the lateral petrygoid
Definition
lateral surface of the lateral petrygoid plate
Term
what is the insertion of the lateral pateygoid
Definition
mostly the petrygoid fovea on the anterior surface of th eneck of the mandible. some from the superior head on the joint capsule and articular disc of temporomandibular joint
Term
what is the innervation of the lateral pateygoid
Definition
lateral pateygoid nerves
Term
what are the actions of the lateral petrygoid
Definition
protrusion of the mandible, depression of the mandible, right and left lateral chewing and grinding
Term
what is the origin of the medial petrygoid deep head
Definition
medial surface of the lateral pateygoid plate
Term
what is the origin of the medial pateygoid superificial head
Definition
tuberosity of the maxilla
Term
what is the insertion of the medial paetrygoid
Definition
medial surface of the angle of the mandible
Term
what are the actions of the lateral petrygoid
Definition
elevate mandible, protrude mandible, right and left lateral chewing and grinding
Term
what communicates with the infratemporal fossa
Definition
temporal fossa, orbit, middle cranial fossa, petrygopalatine fossa
Term
how does the temporal fossa communicate with the infratemporal fossa
Definition
space between zygomatic arch and cranial wall
Term
how does the orbit communicate with the infratemporal fossa
Definition
inferior orbital fissure
Term
how does the middle cranial fossa communicate with the infratemporal fossa
Definition
through foramen ovale and foramen spinosum
Term
how does the pterygopalatine fossa communicate with the infratemporal fossa
Definition
via pterygomaxillary fissure
Term
what are the contents of the infratemporal cossa
Definition
medial and lateral pterygoid muscles, mandibular division of v (V3), otic ganglion, chorda typani, maxillary artery and its branches, maxillary vein and pterygoid venous plexus
Term
what does the mandibular division of the trigeminal nerve consist of
Definition
sensory and some motor
Term
describe the path of the mandibular division of the trigemnial nerve
Definition
exits middle cranial fossa via foramen ovale, enters infratemporal fossa, divides into anterior and posterior
Term
where do branches come off of the mandibular division of the trigeminal nerve
Definition
main trunk, anterior and posterior divisions
Term
what are the branches of the main trunk of V3
Definition
nerve to medial pterygoid, meningeal branch
Term
what does the nerve to the medial petrygoid supply
Definition
medial pterygoid and gives small branch to tensor tympani and tensor veli palatini
Term
what is another name for the meningeal branch of V3
Definition
nervus spinosus, recurrant branch of V3 to dura mater
Term
where does the meningeal branch of V3 enter the middle crainial fossa
Definition
foramen spinosum
Term
what does the meningeal branch of V3 innervate
Definition
dura mater of middle crainial fossa
Term
what are the anterior branches of V3
Definition
nerve to masseter, nerve to lateral petrygoid, deep temporal nerve, buccal nerve
Term
what does the nerve to the masseter of V3 innervate
Definition
masseter, some sensory to anterior aspect of TMJ
Term
what does the nerve to the lateral patrygoid innervate
Definition
pterygoid
Term
what do the deep temporal nerves branch into
Definition
anterior and posterior branches, sometimes a middle
Term
what does the buccal nerve innervate, what fibers
Definition
sensory to the skin and mucosa of the cheek
Term
what are the posterior branches of V3
Definition
autoculotemporal nerve, inferior aveolar, nerve to mylohyoid, lingual nerve
Term
describe the location of the auriculotemporal nerve
Definition
two roots encircle the middle meningeal artery and reuinte posterior to the artery
Term
what does the auriculotemporal nerve supply
Definition
sensory innervation to auricle, external audutory meatus, tympanic membrane, tempromandibular joint, scalp
Term
what fibers does the inferior aveolar have
Definition
sensory and motor
Term
what does the inferior aveolar nerve first enter
Definition
mandible
Term
what does the inferior aveolar nerve supply when it enters the mandible
Definition
mandibular teeth
Term
where does the inferior aveolar nerve go after the mandible
Definition
exits at mental foramen, provides sensory to skin and mucosa of lower lip and chin
Term
what is the final branch of the inferior aveolar nerve, where is it
Definition
before it enters the mandibular foramen, it gives off the nerve to mylohyoid
Term
what fibers does the nerve to the mylohoyid contain
Definition
motor
Term
what does the nerve to mylohyoid innervate
Definition
mylohyoid and anterior belly of digastric
Term
what does the lingual nerve supply
Definition
sensory infor to anterior 2/3 of tounge and mucosa floor of mouth
Term
what joins the lingual nerve, where
Definition
high in the infratemporal fossa by chorda tympani
Term
what type of ganglion is the otic ganglion
Definition
parasympathetic
Term
where is the oric ganglion located
Definition
inferior to foramen ovale and medial to V3
Term
what nerves come out of oric ganglion
Definition
tympanic branch, lesser petrosal, part of auriculotemporal
Term
what does the tympanic branch form
Definition
tympanic plexus
Term
what does the tympanic plexus supply
Definition
mucosa of tympanic cavity
Term
what type of fibers leave the tympanic plexus, as what nerve
Definition
preganglionic parasympathetic, lesser petrosal
Term
where does the lesser petrosal nerve synapse
Definition
otic ganglion
Term
what do the postganglionic fibers of the oric ganglion formm
Definition
parrt of auriculotemporal nerve
Term
what do the postganglionic parasympathetic fibers of the oric ganglion innervate parotid gland
Definition
Term
where does the chorda tympani originate
Definition
cn VII in facial canal just above stylomastoid foramen
Term
describe the path of the chorda tympani after its origin
Definition
enters tympanic cavity and courses across medial side of tympanic membrane, exits temporal bone via petrotympanic fissure, enters infratemporal fossa to join lingual nervve
Term
what fibers does the chorda tympani contain
Definition
sensory or taste, preganglionic fibers, postganglionic fibers
Term
what does the chorda tympani innervate
Definition
anterior 2/3 of tounge
Term
where do the preganglionic fibers of the chorda tympani synapse
Definition
submandibular ganglion
Term
what do the post ganglionic fibers of the chorda tympani innervate
Definition
submandibular and sublingual salivary glands
Term
what are the parts of the maxillary artery
Definition
1. mandibular
2. petrygoid
3. petrygopalatine
Term
where is the mandibular part of maxillary artery located
Definition
between neck of mandible and sphenomandibular ligament
Term
what accompanies the mandibular part of maxillary artery
Definition
autoculotemporal nerve, maxillary vein
Term
what are the branches of the maxillary artery
Definition
deep auricular, anterior tympanic, middle meningeal, accessory meningeal, inferior aveolar
Term
what does the deep auricular artery supply
Definition
external auditory meatus and outer tympanic membrane
Term
what is the path of the anterior tympanic artery
Definition
passes through petrotympanic fissure with chorda tympani to sypply mucosa of the tympanic cavity
Term
what is the path of the middle meningeal artery
Definition
passes between roots of auriculotemporal nerve, through foramen spinosum, to middle cranial foss
Term
what does the middle meningela artery supply
Definition
dura mater and skull
Term
what is the path of the accessory meningeal artery
Definition
passes through foramen ovale
Term
what does the accessory meningeal artery supply
Definition
trigeminal ganglion and adjacent dura mater
Term
what is the inferior aveolar artery accompanied by, where
Definition
inferior aveolar nerve in mandibular canal
Term
describe the path of the inferior aveolar artery
Definition
mandibular calal, exits via mental foramen with mental nerve, gives off artery to mylohyoid
Term
where does the inferior aveolar artery give off its branch
Definition
right before entering the mandibular foramen
Term
where is the pterygoid part of the maxillary artery
Definition
passes anterior and superior in the infratemporal fossa
Term
what are the branches of the petrygoid part of maxillary artery
Definition
masseteric artery, anterior and posterior deep temporal arteries, petrygoid arteries, buccal artery
Term
what do the branches of the petrygoid part of the maxillary artery supply
Definition
branches of V3
Term
what does the massetetic artery supply
Definition
masseter
Term
what does the anterior and posterior deep temporal arteries supply
Definition
temporals muscle
Term
what do the petrygoid arteries supply
Definition
medial and lateral patrygoids
Term
what does the buccal artery supply
Definition
buccinator, skin of cheek, mucosa of oral cavity
Term
where is the petrygoid venous plexus
Definition
network of veins between temporalis and petrygoid muscles
Term
what veins drain into the petrygoid venous plexus
Definition
most of the branches of the mexillary artery
Term
what does the petrygoid venous plexus communicate with
Definition
cavernous sinus, inferior opthalmic vein, facial vein via deep facial vein
Term
how does the petrygoid venous plexus communicate with the cavernus sinus
Definition
small veins passing through foramen ovale, foramen lacreum, and sometimes sphenoidal emissary foramen
Term
what is beneath the petryon
Definition
middle meningeal artery
Term
what forms the floor of the temporal fossa
Definition
petryon
Term
where is the stylomandibular ligament located
Definition
angle of mandible to styloid process
Term
where is the sphenomandibular ligament located
Definition
lingula to spine of sphenoid
Term
where is the infratemporal fossa in relation to the temporal
Definition
below
Term
where is the pterigomaxillary fissure
Definition
edge of mandible
Term
what are the parts of the TMJ, which is more anterior
Definition
fibrous capsule and lateral ligament (anterior)
Term
what does the TMJ connect
Definition
temporal bone to mandible
Term
what is the deep temporal nerve a branch of
Definition
V3
Term
what is the masseteric nerve a branch of
Definition
V3
Term
what are the parasympathetic ganglia of the head
Definition
ciliary, otic, submandibular, petrogopalatine
Term
does everyone have an accessory meningeal nerve
Definition
no
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