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DHBS 301 > Infratemporal Fossa > Flashcards

Infratemporal Fossa Flashcards

1
Q

What attaches to the lingula?

A

Sphenomandibular ligament

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2
Q

What attaches to the coronoid process?

A
  • Temporalis muscle
  • Masseter muscle
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3
Q

What articulates with the head of the mandible?

A

Temporal bone

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4
Q

What attaches to the pterygoid fovea?

A

Lateral pterygoid muscle

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5
Q

What attaches to the ramus of the mandible?

A
  • Masseter muscle
  • Medial pterygoid muscle
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6
Q

What attaches to the angle of the mandible?

A
  • Stylomandibular ligament
  • Masseter muscle
  • Medial pterygoid muscle
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7
Q

Contents of the infratemporal fossa

A
  • Muscles of mastication
  • Maxillary artery and branches
  • Pterygoid plexus of veins
  • CN V3
  • Chorda tympani
  • Otic ganglion and lesser petrosal nerve
  • Medial aspect of the TMJ
  • Sphenomandibular ligament
  • Stylomandibular ligament
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8
Q

What goes through the pterygomaxillary fissure?

A
  • Maxillary artery
  • Posterior superior alveolar nerve, vein, and artery
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9
Q

What goes through the posterior superior alveolar foramina?

A

Posterior superior alveolar nerve, artery, and vein

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10
Q

What goes through the foramen ovale?

A
  • CN V3
  • Acessory meningeal artery
  • Lesser petrosal nerve
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11
Q

What goes through the spinosum foramen?

A
  • Middle meningeal artery
  • Meningeal nerve
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12
Q

What goes through the petrotympanic fissure?

A
  • Chordia tympani
  • Anterior tympanic artery
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13
Q

Masseter origin

A

Zygomatic arch

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14
Q

Masseter insertion

A

Lateral ramus and angle of the mandible

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15
Q

Masseter innervation

A

Masseteric nerve, CN V3 branch

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16
Q

Masseter action

A
  • Elevate
  • Protrusion
  • Retrusion
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17
Q

Temporalis origin

A
  • Temporal lines
  • Temporal fossa
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18
Q

Temporalis insertion

A
  • Coronoid process
  • Anterior ramus of mandible
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19
Q

Temporalis innervation

A

Anterior and posterior deep temporal nerves, branches of CN V3

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20
Q

Lateral pterygoid muscle origin, superior head

A
  • Infratemporal surface of greater wing of sphenoid
  • Infratemporal ridge
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21
Q

Lateral pterygoid muscle origin, inferior head

A

Lateral surface of lateral pterygoid plate

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22
Q

Lateral pterygoid muscle insertion

A
  • Pterygoid fovea on neck of the mandible
  • Articular disk of the TMJ
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23
Q

Lateral pterygoid innervation

A

Lateral pterygoid nerve, CN V3 branch

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24
Q

Lateral pterygoid action

A
  • Depression of mandible
  • Protrusion of mandible
  • Lateral deviation of mandible
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25
Q

Medial pterygoid muscle origin, superficial head

A
  • Maxillary tuberosity
  • Pyramidal process of palatine
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26
Q

Medial pterygoid muscle origin, deep head

A
  • Medial surface of lateral pterygoid plate
  • Pyramidal process of palatine
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27
Q

Medial pterygoid muscle insertion

A
  • Medial surface of ramus
  • Angle of the mandible
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28
Q

Medial pterygoid muscle innervation

A

Medial pterygoid nerve, CN V3 branch

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29
Q

Medial pterygoid muscle action

A
  • Elevate mandible
  • Protrusion
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30
Q

What is the venous counterpart to the maxillary artery branches?

A

Pterygoid plexus of veins

31
Q

What artery branches are in the infratemporal fossa?

A

Maxillary artery

32
Q

What are the three parts of the maxillary artery

A

1st: Mandibular
2nd: Pterygoid
3rd: Pterygopalatine

33
Q

What parts of the maxillary artery are in the infratemporal fossa?

A

1st: Mandibular
2: Pterygoid

34
Q

What part of the maxillary artery is in the pterygopalatine fossa?

A

3rd: Pterygopalatine

35
Q

Where does the 1st mandibular branch of the maxillary artery run?

A

Horizontally between the neck of the mandible and the sphenomandibular ligament

36
Q

What foramen does the middle meningeal artery go through? Where is it going?

A
  • Foramen spinosum
  • Enter the cranial cavity to supply the dura
37
Q

Branches of the inferior alveolar artery

A
  • Mylohyoid artery
  • Mental artery
38
Q

The mylohyoid artery courses within the…

A

Mylohyoid groove

39
Q

What artery goes through the mandibular foramen?

A

Inferior alveolar artery

40
Q

What artery goes through the mental foramen?

A

Mental artery

41
Q

Where does the 2nd portion (pterygoid portion) of the maxillary artery course?

A

Either deep or superficial to the lateral pterygoid muscle

42
Q

How does the 2nd portion (pterygoid portion) of the maxillary artery leave the infratemporal fossa? Where does it go?

A
  • Pterygomaxillary fissure
  • Enters the pterygopalatine fossa
43
Q

What does the posterior superior alveolar nerve go through? Where does it go?

A
  • Pterygomaxillary fissure
  • Goes from the pterygopalatine fossa back to the infratemporal fossa
44
Q

What is the pterygoid plexus of veins made up of?

A

Tributaries of the maxillary vein

45
Q

There is communication between the pterygoid plexus of veins and…

A
  • Facial vein
  • Opthalmic vein
  • Cavernous sinus
46
Q

CN V3 carries what kind of fibers?

A

Sensory and motor

47
Q

Where does to long buccal nerve go?

A

In between the superior and inferior heads of the lateral pterygoid muscle

48
Q

What does the long buccal nerve mediate?

A
  • Sensation from the vestibular/buccal gingiva of the mandibular molars
  • Skin of the mucosa lining of the cheek
49
Q

What does the auriculotemporal nerve circle around?

A

Middle meningeal artery

50
Q

What does the auriculotemporal nerve do?

A
  • Mediates sensory branches
  • Goes to the TMJ, anterior part of the auricle, skin lining of external acoustic meatus, and skin/scalp of the temporal region
51
Q

The auriculotemporal nerve conveys postganglionic parasympathetic nerve fibers from the…

A

Otic ganglion to the parotid gland

52
Q

Does the auriculotemporal nerve convey pre or post ganglionic fibers?

A

Postganglionic

53
Q

Does the auriculotemporal nerve convey sympathetic or parasympathetic fibers to the otic ganglion?

A

Parasympathetic

54
Q

Does the lesser petrosal nerve convey pre or post ganglionic fibers?

A

Preganglionic fibers

55
Q

Does the lesser petrosal nerve carry sympathetic or parasympathetic fibers?

A

Parasympathetic

56
Q

Is the otic ganglion a parasympathetic or sympathetic ganglion?

A

Parasympathetic

57
Q

What are the steps of parasympathetic innervation to the parotid gland?

A
  • Inferior salivatory nucleus
  • CN IX
  • Tympanic branch
  • Lesser petrosal nerve
  • Otic ganglion
  • Auriculotemporal nerve
  • Parotid gland
58
Q

Where does the lingual nerve go?

A

Ramus of the mandible and the medial pterygoid muscle

59
Q

What does the lingual nerve mediate?

A

Sensation from the anterior 2/3 of tongue, floor of mouth, and adjacent lingual gingiva

60
Q

The lingual nerve conveys taste fibers from the…

A

Chorda tympani nerve

61
Q

What does the chorda tympani nerve mediate?

A

Taste on anterior 2/3 of tongue

62
Q

Does the chorda tympani nerve have parasympathetic or sympathetic fibers?

A

Parasympathetic fibers

63
Q

What do the parasympathetic fibers of the chorda tympani do?

A

Mediate secretions of the submandibular and sublingual salivary glands

64
Q

Where does the inferior alveolar nerve go?

A
  • Between the ramus of the mandible and the sphenomandibular ligament
  • Then through the mandibular foramen to the mandibular canal
65
Q

What does the inferior alveolar nerve mediate?

A

Sensation from the mandibular teeth, vestibular gingiva, mandibular incisors, canines, and premolars

66
Q

What is the motor branch of the inferior alveolar nerve?

A

Mylohyoid nerve

67
Q

What innervates the mylohyoid muscle?

A

Mylohyoid nerve

68
Q

What innervates the anterior belly of the digastric muscle?

A

Mylohyoid nerve

69
Q

What does the mental nerve innervate

A

Skin of chin and lower lips, mucous membrane of lower lips, labial gingiva near the mandibular incisors, canines, and premolars

70
Q

What nerves would an inferior alveolar nerve block impact?

A

Mental nerve and lingual nerve

71
Q

What would a buccal nerve block numb?

A

Buccal gingiva next to the mandibular molars

72
Q

Where does the pterygoid plexus of veins drain into?

A

Maxillary vein

73
Q

Is the long buccal nerve motor or sensory?

A

Sensory

DHBS 301 (21 decks)

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