Infratemporal Fossa Flashcards by Shelby SK

Q

blue triangle space

A

pterygomaxillary fissure

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Q

the chorda tympani carries _______ fibers to the ________

A

preganglionic parasympathetics

submandibular ganglion

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Q

masseter action

A

elevate and protrude

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Q

blue arrow

A

preganglionic glossopharyngeal (CN IX) nerve via tympanic plexus and lesser petrosal

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Q

green arrow

A

lingual nerve

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Q

blue arrow

A

ramus of mandible

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Q

green arrow

A

nerve to mylohyoid (branch of the inferior alveolar nerve)

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Q

the third part of the maxillary artery has branches to the

A

upper jaw, nasal cavity, palate, face

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Q

red dot

A

lateral pterygoid plate

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Q

Green arrows

A

posterior/superior temporal lines

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Q

lateral movements of the anterior mandible can be produced by ______ use of muscles

A

unilateral

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Q

action of the medial pterygoid muscle

A

elevate and protrude mandible

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Q

green arrow

A

neck of the mandible

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Q

blue arrow

A

middle meningeal artery

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Q

red dot

A

infratemporal surface of the sphenoid bone

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Q

the lingual nerve carries ________ fibers to the _____

A

sensory

tongue

(green)

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Q

red arrow

A

inferior cavity (TMJ)

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Q

red arrow

A

styloid process

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Q

red arrow

A

lingual nerve

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Q

medial pterygoid muscle origin –> insertion

A

superficial: maxillary tuberosity –> medial surface of ramus of mandible
deep: medial surface of lateral pterygoid plate –> medial surface of ramus of mandible

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Q

which artery lies superficial or deep to the laterl pterygoid muscle? (population split 50/50)

A

maxillary artery

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Q

the inferior alveolar artery supplies blood to the

A

mandibular teeth

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Q

temporomandibular ligament origin –> insertion

A

thickened part of articular capsule –> temporal bone, neck of mandible

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Q

maxillary vein drains to the

A

retromandibular vein

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pink dot

infratemporal fossa

green arrow

auricolutemporal nerve

muscles of mastication involved with elevation of the madible

temporalis, masseter, medial pterygoid

green arrow

medial pterygoid plate of the sphenoid bone

nerve to mylohyoid carries _______ fibers to the \_\_\_\_\_\_\_

motor mylohyoid, anterior belly of digastric

blue dot

deep head of the medial pterygoid muscle

green dot

superior (upper) head or the lateral pterygoid muscle

blue arrow

maxillary artery

green arrow

pterygoid plexus of veins

which nerve encircles the meningeal artery

auricolutemporal nerve

The superior cavity of the TMJ allows what kind of movement

opening the mouth wide- protrusion/retrusion (gliding/translation) "anterior sliding" (blue arrow)

Temporalis action

elevate mandible, retract mandible

blue arrow

foramen spinosum of the sphenoid bone

the auricolutemporal nerve carries \_\_\_\_\_\_\_\_fibers:

parasympathetic postganglionic to parotid gland

the mandibular nerve enters the infratemporal fossa through

foramen ovale

green arrow

articular disc

orange dot

pterion

red arrow

anterior belly of digastric

muscles of mastication involved in depression of the mandible

suprahyoid muscles, infrahyoid muscles, lateral pterygoid (and gravity!)

blue arrow

medial surface of the lateral pterygoid plate

blue arrow

sphenomandibular joint

red arrow

medial surface of ramus of mandible

red arrow

lingula

blue arrow

maxillary vein

blue arrow

superior cavity (TMJ)

temporomandibular ligament action

restricts posterior and lateral movement

blue arrow

branch of facial nerve (CN VII)

2nd part of the maxillary artery has branches to

temporalis, pterygoids, masseter, buccinator

red arrow

postganglionic going to parotid gland via auriculotemporal nerve

muscles of mastication involved with retrusion of the mandible

temporalis posterior fibers (prime), anterior belly of digastric

green arrow

chorda tympani

blue arrow

maxillary vein

ipslateral excursion produces what kind of lateral movement

retraction

blue arrow

mandibular foramen, mandibular canal

the inferior cavity of the TMJ allows for what kind of movement

First 10/15 degrees of opening th emouth Hinge movement (depression, elevation) (red arrow)

green arrow

otic ganglion

green arrow

inferior alveolar nerve

blue dot

inferior (lower) head of the pterygoid muscle

the middle meningeal artery passes through the

foramen spinosum

red arrow

inferior alveolar artery

purple dot

lateral pterygoid plate of the sphenoid bone

green arrow

temporomandibular ligament

temporalis origin --\> insertion

floor of temporal fossa, deep surface of temporal fascia --\> coronoid process

the middle meningeal artery splits

the auriculotemporal nerve as it goes into the foramen spinosum

blue arrow

inferior alveolar nerve entering the mandibular foramen

lateral pterygoid origin --\> insertion

superior: infratemporal surface of the greater wing of the sphenoid --\> articular disc and capsule of TMJ inferior: lateral surface of lateral pterygoid plate --\> pterygoid fovea and capsule of TMJ

blue arrow

middle meningeal artery

red arrow

zygomatic arch

purple arrow

auricular tubercle

what innervates the TMJ

auricolutemporal nerve

blue arrow

chorda tympani nerve (CN VII)

blue arrow

mylohyoid

contralateral excursion produces what kind of movement

protraction

Masseter origin --\> insertion

inferior border of zygomatic arch --\> lateral surface of ramus and angle of the mandible

temporalis innervation

mandibular nerve CN V₃

green arrow

mental nerve (branch of inferior alveolar) exiting mental foramen

green arrow

zygomatic arch

muscles of mastication involved with protrusion of the mandible

lateral pterygoid (prime), superficial masseter, medial pterygoid

green arrow

maxillary tuberosity

green dot

superficial head of medial ptyergoid muscle

green arrow

mandibular nerve V₃

blue arrows

frontal and zygomatic bones

sphenomandibular joint action

provides passive support

green arrow

pterygoid plexus of veins

green dot

temporal surface of the sphenoid bone

blue/green dot

infratemporal surface of the sphenoid

inferior alveolar artery passes through the

mandibular foramen

red arrow

mandibular fossa (also known as the glenoid fossa of the temporal bone)

inferior alveolar nerve carries _______ fibers to the \_\_\_\_\_\_\_

sensory mandibular teeth