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ANT 1001 > temporal fossa > Flashcards

temporal fossa Flashcards

1
Q

temporal and infra temporal fossa

A

interconnected spaces
boundaries are bone and soft tissue

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2
Q

what muscles does temporal and infra temporal fossa relate to

A

muscles of mastication
masseter lateral to ITF
medial and lateral pterygoid in ITF
temporales fils TF

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3
Q

main bones involved in TF and ITF

A

temporal, zygomatic arch, sphenoid bones, maxilla, mandible

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4
Q

temporal fossa covers

A

lateral surface of skull

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5
Q

temporal fossa goes from where to where

A

from zygomatic process of frontal bone to surpamastoid crest of temporal bone

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6
Q

major structure of temporal fossa

A

temporalis muscle

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7
Q

temporalis muscle inv and blood supply

A

inv- deep temporal nerves from anterior trunk of mandibular nerve V3 (motor) and Zygomaticotemporal of zygomatic nerve V2 (sensory)
blood supply- deep temporal arteries and middle temporal arteries

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8
Q

deep temporal artery is from

A

maxillary artery

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9
Q

middle temporal artery is from

A

superficial temporal artery, passes under muscle and superiorly into deep surface

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10
Q

infratemporal fossa is _______ to temporal fossa

A

inferior

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11
Q

infra temporal fossa is positioned

A

between ramus of mandible laterally and wall of pharynx medially

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12
Q

roof of the infra temporal fossa

A

inferior surface of greater wing of sphenoid and temporal bone

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13
Q

contents of root of ITF

A

contains foramen spinosum, foramen ovale, petrotympanic fissure

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14
Q

lateral wall of ITF

A

medial surface of mandible

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15
Q

medial wall of ITF

A

to the anterior- lateral plate of pterygoid process and pterygomaxillary fissure (allows structures to pass from ITF to pterygopalatine fossa)
to the posterior- pharynx and 2 muscles of soft palate (tensor and elevator palatine)

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16
Q

major contents of ITF

A

sphenomandibular ligament, medial and lateral pterygoid muscles, maxillary artery, mandibular nerve V3, branches of facial nerve (VII), glossopharyngeal nerve (IX), pterygoid plexus of veins

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17
Q

sphenomandibular ligament

A

extracapsular for TMJ, from spine of sphenoid (lingual near foramen)

18
Q

maxillary artery supplies

A

largest branch off ECA
blood supply to nasal cavity, roof and lateral wall oral cavity, dura mater, all teeth

19
Q

maxillary artery branches

A

first part- middle meningeal, inferior alveolar
second part- deep temporal, masseteric, buccal, pterygoid branches

20
Q

branches off anterior trunk of mandibular nerve

A

buccal- mostly sensory
massesteric- motor
deep temporal- motor
nerve to lateral pterygoid

21
Q

buccal nerve sensory to

A

off anterior trunk, mostly sensory, some motor to lateral pterygoid
sensory to adjacent skin and oral mucosa, buccal, gingiva, lower molars, anesthesia to “long buccal” (lower posterior teeth)

22
Q

buccal nerve moves through

A

tendon of temporalis and continues to cheek, lateral buccinator

23
Q

masseteric nerve

A

supplies masseter muscle, passes over lateral pterygoid through mandibular notch

24
Q

deep temporal nerve

A

supplies temporalis muscle via infra temporal crest via temporal fossa

25
Q

nerve to lateral pterygoid

A

two possible sources- off anterior trunk or from its buccal branch
passes into deep surface of lateral pterygoid

26
Q

branches off posterior trunk of mandibular nerve

A

all sensory, auriculotemporal, lingual, inferior alveolar

27
Q

auriculotemporal nerve supplies

A

sensation over large area of temple, sensory external ear, auditory meatus, tympanic membrane, TMJ
has post ganglionic parasympathetic nerves for glossopharyngeal (IX) to parotid

28
Q

auriculotemporal nerve enters through

A

foramen spinosum

29
Q

lingual nerve

A

sensory nerve from V3
general sensation anterior 2/3 of tongue, oral mucosa floor of mouth, lingual gingiva lower teeth

30
Q

lingual nerve enters

A

oral cavity at posterior attachment of mylohyoid and superior constrictor of pharynx
tongue on lateral surface of hyoglossus muscle
inferior to last molar, easily palpated and traumatized

31
Q

inferior alveolar nerve supples

A

major sensory nerve in lower
one motor branch to mylohyoid and anterior digastric prior to entering canal

31
Q

inferior alveolar passes

A

between sphenomandibular ligament and ramus of mandible and enters canal via mandibular foramen

32
Q

branches of inferior alveolar nerve

A

incisive nerve and mental nerve

33
Q

nerves prior to branches of trunk

A

meningeal branch via foramen spinosum- sensory to dura mater and mastoid
nerve to medial pterygoid- branches to tensor veli palatini and tensor tympani

34
Q

chorda tympani

A

branch of facial nerve (VII), close to condyle
parasympathetic inv to salivary glands, taste anterior 2/3 tongue
sensory to tongue, related to ear and TMJ (petrotympanic fissure)

35
Q

lesser petrosal

A

branch of glossopharyngeal nerve (IX)
parasympathetic to parotid

36
Q

what two nerves join with branches of mandibular nerve V3 in the ITF

A

chorda tympani and lesser petrosal

37
Q

pterygoid plexus of veins resides

A

between pterygoid muscles, lateral pterygoid, and temporalis

38
Q

pterygoid plexus of veins drains

A

drains area associated with maxillary artery
drains nasal cavity, all teeth, oral cavity, muscles of ITF, paranasal sinuses, nasopharynx

39
Q

infection can spread into pterygoid plexus of veins via

A

emissary veins

40
Q

lack of valves in pterygoid plexus of veins may allow

A

anesthetic back flow into cranial cavity

41
Q

mastoid process

A

at the base of skull
area of attachment for muscle- SCM, posterior digastric, etc.
has air cells (sinuses)

ANT 1001 (5 decks)

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