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Z-Anatomy > Infratemporal Fossa > Flashcards

Infratemporal Fossa Flashcards

1
Q

What is the posterior border of the infra temporal fossa?

A

Tympanic plate and mastoid process

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2
Q

What is the superior border of the infra temporal fossa?

A

Zygomatic arch

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3
Q

What is the lateral border of the infra temporal fossa?

A

ramus of the mandible

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4
Q

What is the medial border of the infra temporal fossa?

A

lateral pterygoid plate

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5
Q

What is the anterior border of the infra temporal fossa?

A

Post. maxilla

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6
Q

what muscles are in the infratemporal fossa?

A
  • Temporalis (inferior part)
  • Medial pterygoid
  • lateral pterygoid
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7
Q

what nerves are in the infratemporal fossa?

A
  • branches of CN V3 (auriculotemporal, inferior alveolar, lingual and buccal)
  • chorda tympani (CN VII)
  • Otic ganglion
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8
Q

what artery is in the infratemporal fossa?

A

maxillary artery (and its branches)

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9
Q

what veins are in the infratemporal fossa?

A

Pterygoid plexus

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10
Q

what is the function of the lateral pterygoid?

A

Opens jaw

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11
Q

what is the origin of the superior head of the lateral pterygoid?

A

infratemporal crest of the greatest wing of sphenoid

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12
Q

what is the origin of the inferior head of the lateral pterygoid?

A

lateral surface of lateral pterygoid plate

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13
Q

what is the insertion of the superior head of the lateral pterygoid?

A

mandibular (pterygoid) fovea

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14
Q

what is the insertion of the inferior head of the lateral pterygoid?

A

TMJ capsule and articular disc

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15
Q

what is the innervation of lateral pterygoid?

A

CN V3

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16
Q

what is the function of the medial pterygoid?

A

closes jaw

17
Q

what is the origin of the deep head of the medial pterygoid?

A

medial surface of lateral pterygoid plate

18
Q

what is the origin of the superficial head of the medial pterygoid?

A

tuberosity of maxilla

19
Q

what is the insertion of the medial pterygoid?

A

medial surface of mandibular ramus

20
Q

what is the pterygoid venous plexus?

A

network of veins

21
Q

what is the infection risk of pterygoid venous plexus?

A

communication between superficial face and dural venous sinuses

22
Q

what are the branches of the 1st part of the maxiallary artery?

A
  • Deep auricular
  • Anterior tympanic
  • Middle meningeal
  • Accessory middle meningeal
  • Inferior alveolar
23
Q

what are the branches of the 2nd part of the maxiallary artery?

A
  • Deep temporal
  • Masseteric branches
  • Pterygoid branches
  • Buccal branch
24
Q

what are the branches of the 3rd part of the maxiallary artery?

A
  • Sphenopalatine
  • Descending palatine
  • Posterior superior alveolar
  • Infra-orbital
  • Pharyngeal branches
  • Vidian (a. of pterygoid canal)
25
Q

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

A

Outside the cranial vault

26
Q

where does the mandibular nerve divide into an anterior and posterior part?

A

After foreman ovale

27
Q

what are the branches of the anterior division of the mandibular nerve?

A
  • deep temporal
  • buccal
  • muscular branches
28
Q

what modality is deep temporal and what does it supply?

A
  • motor

- temporalis

29
Q

what modality is buccal and what does it supply?

A
  • sensory

- mucosa and skin of the cheek

30
Q

what modality is the muscular branches and what does it supply?

A
  • motor
  • massester
  • lateral pterygoid
31
Q

what are the branches of the posterior division of the mandibular nerve?

A
  • auriculotemporal
  • inferior alveolar
  • nerve to mylohyoid
  • mental
  • lingual
32
Q

what modality is the muscular auriculotemporal and what does it supply?

A
  • sensory

- tragus and posterior temple

33
Q

what modality is the inferior alveolar nerve and what does it supply?

A
  • sensory
  • lower dental arch
  • mandibular labial gingivae
34
Q

what modality is the nerve to mylohyoid and what does it supply?

A
  • motor

- mylohoid and ABD

35
Q

what modality is the mental nerve and what does it supply?

A
  • sensory

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

36
Q

what modality is the lingual and what does it supply?

A
  • sensory
  • anterior 2/3 of tongue
  • floor of mouth
  • mandibular lingual gingivae
37
Q

what supplies the parotid gland with parasympathetic innervation (secretomotor)?

A

CN IX - hitches a ride on branches of CN V3

38
Q

what does the chorda tympani branch of CN VII connects to and what does it supply?

A
  • connects to the lingual nerve branch of CN V3

- Special sense of taste from anterior 2/3 tongue and palate carried in chorda tympani fibres to CN VII

39
Q

what does CN VII parasympathetic axons supply?

A

secretomotor innervation to the submandibular and sublingual salivary glands

Z-Anatomy (25 decks)

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