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Anatomy > Skull Foramina and Cranial Nerves > Flashcards

Skull Foramina and Cranial Nerves Flashcards

1
Q

What is CN I?

A

Optic nerve

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2
Q

What is CN II?

A

Olfactory nerve

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3
Q

What is CN III?

A

Oculomotor nerve

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4
Q

What is CN IV?

A

Trochlear nerve

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5
Q

What is CN V?

A

Trigeminal nerve

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6
Q

What is CN VI?

A

Abducens nerve

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7
Q

What is CN VII?

A

Facial nerve

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8
Q

What is CN VIII?

A

Vestibulocochlear nerve

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9
Q

What is CN IX?

A

Glossopharyngeal nerve

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10
Q

What is CN X?

A

Vagus nerve

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11
Q

What is CN XI?

A

Accessory nerve

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12
Q

What is CN XII?

A

Hypoglossal nerve

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13
Q

What nerve runs through the hypoglossal canal?

A

CN XII Hypoglossal nerve

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14
Q

What nerves run into the tympano-occipital fissure and out the jugular foramen?

A
  • CN IX glossopharyngeal nerve
  • CN X vagus nerve
  • CN XI accessory nerve
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15
Q

The tympanic bulla is associated with what portion of the ear?

A

middle ear

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16
Q

What process covers the cerebellum?

A

tentorial process

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17
Q

What is the main sensory nerve of the head?

A

CN V trigeminal nerve

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18
Q

What nerves are associated with the internal acoustic meatus?

A
  • CN VII facial nerve
  • CN VIII vestibulocochlear nerve
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19
Q

What nerve runs through the stylomastoid foramen?

A

CN VII facial nerve

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20
Q

What houses the tympanic membrane?

A

External acoustic meatus

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21
Q

If you pass the tympanic membrane, then you enter what?

A

tympanic cavity (middle ear)

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22
Q

The retroarticular foramen houses what?

A

Retroarticular vein

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23
Q

The entrance into the tympanic cavity is typically sealed by what?

A

tympanic membrane

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24
Q

The retroarticular vein gives origin to what other vein?

A

Maxillary vein

25
Q

What is the short bony canal where the tympanic membrane is attached and is the landmark between the middle and the external ear?

A

external acoustic meatus

26
Q

What is the air filled bony cavity in the tympanic portion of temporal bone that forms the tymapnic cavity of the middle ear and where the three small ossicles live?

A

Tympanic bulla

27
Q

The tympanic bulla should be filled with air, which means it should appear as what color on XRAY?

A

gray

28
Q

What fissure is located medial to the tympanic bulla?

A

Tympanooccipital fissure

29
Q

The orbital fissure of the basisphenoid bone has what nerves?

A
  • oculomotor nerve CN III
  • trochlear nerve CN IV
  • adbucens nerve CN VI
  • opthalamic nerve CN V1
30
Q

The round foramen of the basisphenoid bone has what nerve?

A

maxillary nerve CN V2

31
Q

The oval foramen of the basisphenoid bone has what nerve?

A

mandibular nerve CN V3

32
Q

What are the three branches of trigeminal nerve CN V?

A
  • opthalamic nerve V1
  • maxillary nerve V2
  • mandibular nerve V3
33
Q

What is the most caudal bony prominence of the sella turcica?

A

dorsum sellae

34
Q

What is the fossa for the hypophysis, in the middle of a lrger depression known as sella tucica?

A

hypophyseal fossa

35
Q

What nerve runs through the optic canals of the presphenoid bone?

A

optic nerve CN II

36
Q

What is the bony groove for the nervous structure known as optic chasm that correspond to the optic nerves crossover?

A

Chiasmatic groove

37
Q

The frontal sinus opens where?

A

to nasal cavity

38
Q

The frontal sinus appears as what color on XRAY due to air?

A

dark grey/almost black

39
Q

What is the bony wall between the cranial and nasal cavities?

A

cribriform plate

40
Q

The cribriform plate of the ethmoidal bone has what nerves?

A
  • olfactory nerves CN I
  • vomeronasal nerves
41
Q

The lacrimal bone has a fossa for what?

A

lacrimal sac

42
Q

What is the bony canal between the infraorbital formane and maxillary foramen?

A

infraorbital canal

43
Q

What nerve enters the infraorbital canal at the maxillary foramen and exits via the infraorbital foramen?

A

maxillary nerve CN V2

44
Q

Where is a good spot to numb the maxilla?

A

Infraorbital foramen

45
Q

The sphenopalatine foramen has branches of maxillary nerve V2 for sensation of what?

A

nasal cavity

46
Q

The caudal palatine foramen has branches of maxillary nerve V2 for sensation of what?

A

palate

47
Q

The major and minor palatine foramens has branches of what nerve?

A

maxillary nerve CN V2

48
Q

What is the bony canal inside the mandible?

A

mandibular canal

49
Q

What is the caudal opening of the mandibular canal?

A

mandibular foramen

50
Q

What is the rostral opening of the mandibular canal?

A

mental foramina

51
Q

What nerve runs through the mandibular canal?

A

branch of mandibular nerve CN V3

52
Q

What fissure sits between the basioccipital and temporal bones and connects inside with the jugular foramen?

A

tympanooccipital fissure

53
Q

What nerves/vessels may be affected in a fracture of the tympanic bulla or an accident during a middle ear surgery?

A
  • glossopharyngeal nerve CN IX
  • vagus nerve CN X
  • accessory nerve CN XI
  • internal carotid artery
  • internal carotid vein
54
Q

What foramen sits between the petrosal portion of the temporal bone and the basioccipital and connects outside through the tympanooccipital foramen?

A

jugular foramen

55
Q

What canal is found in the most rostral angle of the petrosal portion of the temporal bone?

A

canal for trigeminal nerve

56
Q

What contains the bodies of the pseudo unipolar afferent nerves from CN V?

A

trigeminal ganglion

57
Q

What fissure contains the motor nerve for the extrinsic muscles of the eye?

A

orbital fissure

58
Q

The relationship between vomer and the perpendicular plate of ethmoidal bone forms what?

A

the osseous part of the nasal septum

59
Q

What foramen can be related with the upper 4th premolar tooth?

A

infraorbital foramen

Anatomy (29 decks)

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