Infratemporal Fossa Flashcards
blue triangle space
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pterygomaxillary fissure
the chorda tympani carries _______ fibers to the ________
preganglionic parasympathetics
submandibular ganglion
masseter action
elevate and protrude
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blue arrow
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preganglionic glossopharyngeal (CN IX) nerve via tympanic plexus and lesser petrosal
green arrow
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lingual nerve
blue arrow
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ramus of mandible
green arrow
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nerve to mylohyoid (branch of the inferior alveolar nerve)
the third part of the maxillary artery has branches to the
upper jaw, nasal cavity, palate, face
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red dot
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lateral pterygoid plate
Green arrows
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posterior/superior temporal lines
lateral movements of the anterior mandible can be produced by ______ use of muscles
unilateral
action of the medial pterygoid muscle
elevate and protrude mandible
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green arrow
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neck of the mandible
blue arrow
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middle meningeal artery
red dot
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infratemporal surface of the sphenoid bone
the lingual nerve carries ________ fibers to the _____
sensory
tongue
(green)
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red arrow
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inferior cavity (TMJ)
red arrow
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styloid process
red arrow
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lingual nerve
medial pterygoid muscle origin –> insertion
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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which artery lies superficial or deep to the laterl pterygoid muscle? (population split 50/50)
maxillary artery
the inferior alveolar artery supplies blood to the
mandibular teeth
temporomandibular ligament origin –> insertion
thickened part of articular capsule –> temporal bone, neck of mandible
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maxillary vein drains to the
retromandibular vein
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pink dot
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infratemporal fossa
green arrow
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auricolutemporal nerve
muscles of mastication involved with elevation of the madible
temporalis, masseter, medial pterygoid
green arrow
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medial pterygoid plate of the sphenoid bone
nerve to mylohyoid carries _______ fibers to the _______
motor
mylohyoid, anterior belly of digastric
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blue dot
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deep head of the medial pterygoid muscle
green dot
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superior (upper) head or the lateral pterygoid muscle
blue arrow
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maxillary artery
green arrow
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pterygoid plexus of veins
which nerve encircles the meningeal artery
auricolutemporal nerve
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The superior cavity of the TMJ allows what kind of movement
opening the mouth wide-
protrusion/retrusion (gliding/translation)
“anterior sliding” (blue arrow)
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Temporalis action
elevate mandible, retract mandible
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blue arrow
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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
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green arrow
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articular disc
orange dot
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pterion
red arrow
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anterior belly of digastric
muscles of mastication involved in depression of the mandible
suprahyoid muscles, infrahyoid muscles, lateral pterygoid (and gravity!)
blue arrow
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medial surface of the lateral pterygoid plate
blue arrow
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sphenomandibular joint
red arrow
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medial surface of ramus of mandible
red arrow
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lingula
blue arrow
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maxillary vein
blue arrow
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superior cavity (TMJ)
temporomandibular ligament action
restricts posterior and lateral movement
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blue arrow
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branch of facial nerve (CN VII)
2nd part of the maxillary artery has branches to
temporalis, pterygoids, masseter, buccinator
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red arrow
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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
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chorda tympani
blue arrow
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maxillary vein
ipslateral excursion produces what kind of lateral movement
retraction
blue arrow
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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)
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green arrow
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otic ganglion
green arrow
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inferior alveolar nerve
blue dot
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inferior (lower) head of the pterygoid muscle
the middle meningeal artery passes through the
foramen spinosum
red arrow
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inferior alveolar artery
purple dot
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lateral pterygoid plate of the sphenoid bone
green arrow
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temporomandibular ligament
temporalis origin –> insertion
floor of temporal fossa, deep surface of temporal fascia –> coronoid process
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the middle meningeal artery splits
the auriculotemporal nerve as it goes into the foramen spinosum
blue arrow
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inferior alveolar nerve entering the mandibular foramen
lateral pterygoid origin –> insertion
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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
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middle meningeal artery
red arrow
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zygomatic arch
purple arrow
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auricular tubercle
what innervates the TMJ
auricolutemporal nerve
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blue arrow
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chorda tympani nerve (CN VII)
blue arrow
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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
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temporalis innervation
mandibular nerve CN V3
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green arrow
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mental nerve (branch of inferior alveolar) exiting mental foramen
green arrow
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zygomatic arch
muscles of mastication involved with protrusion of the mandible
lateral pterygoid (prime), superficial masseter, medial pterygoid
green arrow
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maxillary tuberosity
green dot
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superficial head of medial ptyergoid muscle
green arrow
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mandibular nerve V3
blue arrows
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frontal and zygomatic bones
sphenomandibular joint action
provides passive support
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green arrow
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pterygoid plexus of veins
green dot
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temporal surface of the sphenoid bone
blue/green dot
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infratemporal surface of the sphenoid
inferior alveolar artery passes through the
mandibular foramen
red arrow
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mandibular fossa (also known as the glenoid fossa of the temporal bone)
inferior alveolar nerve carries _______ fibers to the _______
sensory
mandibular teeth
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