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Anatomy mod 3 > Infratemporal fossa > Flashcards

Infratemporal fossa Flashcards

1
Q

Lateral boundary of infratemporal fossa?

A

ramus of mandible

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2
Q

superior boundary of infratemporal fossa?

A

zygomatic arch

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3
Q

posterior boundary of infratemporal fossa?

A

tympanic plate and mastoid process

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4
Q

anterior boundary of infratemporal fossa?

A

post. maxilla

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5
Q

medial boundary of infratemporal fossa?

A

lateral pterygoid plate

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6
Q

4 main contents of infratemporal fossa?

A

muscles, nerves, arteries and veins

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7
Q

muscles in infratemporal fossa?

A

temporalis, medial pterygoid and lateral pterygoid

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8
Q

Nerves in infratemporal fossa?

A

branches of mandibular nerve (CNV3), Chorda tympani (CN VII) and otic ganglion

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9
Q

Arteries in infratemporal fossa?

A

maxillary artery and its branches

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10
Q

Veins in infratemporal fossa?

A

pterygoid plexus

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11
Q

Lateral pterygoid function

A

opens jaw

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12
Q

origin of lateral pterygoid

A

infratemporal crest of greater wing of spenoid bone and lateral surface of lateral pterygoid plate

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13
Q

Lateral pterygoid insertion

A

mandibular fovea and TMJ capsule and articular disc

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14
Q

Lateral ptyergoid innervation

A

CNV3

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15
Q

Medial pterygoid function

A

closes jaw

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16
Q

Medial pterygoid function

A

medial surface of lateral pterygoid plate and tuberosity of maxilla

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17
Q

Medial pterygoid insertion

A

medial surface of mandibular ramus

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18
Q

Medial pterygoid innervation

A

CNV3

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19
Q

network of veins located within the infratemporal fossa?

A

pterygoid venous plexus

20
Q

Clinical relevance of pterygoid venous plexus?

A

infection between the superficial face and dural venous sinuses

21
Q

Significance of danger triangle

A

carry infection into cranial cavity via cavernous sinus

22
Q

Lots of bleeding from pterygoid venous plexus if a person suffers from what?

A

le fort fractures or displaced 88

23
Q

Nerve branches of the maxillary artery before the lateral pterygoid?

A

deep auricular, anterior tympanic, middle meningeal, accessory middle meningeal and inferior alveolar

24
Q

Nerve branches of maxillary artery associated with lateral pterygoid?

A

deep temporal, masseteric branches, pterygoid branches, buccal branch

25
Q

Nerve branches of maxillary artery after lateral pterygoid?

A

sphenopalatine, descending palatine, posterior superior alveolar, infra-orbital, pharyngeal branches and vidian

26
Q

What does the inferior alveolar nerve supply?

A

lower teeth

27
Q

What does the buccal artery supply?

A

cheek

28
Q

What does the middle meningeal artery go to and via what?

A

cranial vault via foramen spinosum

29
Q

Sphenopalatine artery supplies?

A

nose/palatine

30
Q

Infra-orbital artery supplies

A

upper teeth and skin of mid-face

31
Q

Posterior superior alveolar artery supplies?

A

upper teeth

32
Q

What are the roots for the mandibular nerve CNV3?

A

motor and sensory

33
Q

Where do the motor and sensory roots of the mandibular nerve unite?

A

outside the cranial vault

34
Q

Name 3 nerves in the anterior division of the mandibular nerve?

A

Deep temporal, buccal and muscular branches

35
Q

Name 5 nerves in the posterior division of the mandibular nerve?

A

auriculotemporal, inferior alveolar, nerve to mylohyoid, mental nerve and lingual nerve

36
Q

What type of innervation for auriculotemporal nerve and what it innervates?

A

sensory - tragus and posterior temple

37
Q

What type of innervation for inferior alveolar nerve and what it innervates?

A

sensory- lower dental arch and mandibular labial gingivae

38
Q

What type of innervation for nerve to mylohyoid and what it innervates?

A

motor- mylohyoid and ABD

39
Q

What type of innervation for mental nerve and what it innervates?

A

sensory - chin, lower lip mucosa, gingivae of lower 3-3

40
Q

What type of innervation for lingual nerve and what it innervates?

A

sensory - anterior 2/3 of tongue, floor of mouth and mandibular lingual gingivae

41
Q

What does the otic ganglion do?

A

parasympathetic innervation of parotid gland from CN IX and hitches a ride on branches of CNV3

42
Q

What is Chorda Tympani a branch of?

A

facial nerve

43
Q

What do chorda tympani fibres carry to CNVII

A

special sense of taste from anterior 2/3 of tongue and palate

44
Q

What do CNVII parasympathetic axons supply?

A

Secretomotor innervation to the submandibular and sublingual salivary glands

45
Q

Clinical importance of Infratemporal fossa?

A

muscles involved in mastication, blood supply to teeth via maxillary artery, pterygoid plexus - infection and bleeding and mandibular nerve and relationships

Anatomy mod 3 (8 decks)

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