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Neuroanatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

which foramen does the olfactory nerve pass through?

A

cribiform

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2
Q

which foramen does the optic nerve pass through?

A

optic canal

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3
Q

which foramen does the oculomotor nerve pass through?

A

superior orbital fissure

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4
Q

which foramen does the trochlear nerve pass through?

A

superior orbital fissure

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5
Q

which foramen does the opthalamic V1 branch pass through?

A

superior orbital fissure

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6
Q

which foramen does the V2 maxillary branch pass through?

A

foramen rotundum

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7
Q

which foramen does the V3 mandibular branch pass through?

A

foramen ovale

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8
Q

which foramen does the abducens nerve pass through?

A

superior orbital fissure

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9
Q

which foramen does the facial nerve pass through?

A

internal acoustic meatus

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10
Q

which foramen does the vestibulocochlear nerve pass through?

A

internal acoustic meatus

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11
Q

which foramen does the glossopharyngeal nerve pass through?

A

jugular foramen

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12
Q

which foramen does the vagus nerve pass through?

A

jugular foramen

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13
Q

which foramen does the accessory nerve pass through?

A

jugular foramen

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14
Q

which foramen does the hypoglossal nerve pass through?

A

hypoglossal canal

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15
Q

label the nerves

A
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16
Q

what type of fibres are present in cranial nerve I?

A

special sensory

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17
Q

what plate of bone do the branches of CN I enter into the anterior cranial fossa?

A

ethmoid bone

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18
Q
A
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19
Q

what type of fibres are present in cranial nerve II?

A

special sensory

20
Q
A
21
Q

which type of fibres are present in CN III, IV & VI?

A

motor
CN III > motor and parasympathetic

22
Q
A
23
Q
A
24
Q

what type of fibres are present in CN V1?

A

general sensory

25
Q

what type of nerve fibres are present in CN V2?

A

general sensory

26
Q

what type of nerve fibres are present in CN V3?

A
  • general sensory (anterior 2/3 of tongue)
  • motor (mastication)
27
Q
A
28
Q

which type of fibres are present in CN VII?

A
  • general sensory
  • special sensory (ant. 2/3 of tongue)
  • motor (facial expression m.)
  • parasympathetic > sublingual and submandibular salivary glands
29
Q

which type of fibres are present in CN VIII?

A

special sensory

30
Q

which type of fibres are present in CN IX?

A
  • general sensory
  • special sensory (post 1/3 of tongue)
  • motor (stylopharyngeus)
  • parasympathetic > parotid gland
31
Q
A
32
Q

which type of fibres are present in cranial nerve X?

A
  • general sensory
  • special sensory (root of tongue and epiglottis)
  • motor (GI tract, muscles of pharynx and larynx, palatoglossus, soft palate muscles)
  • parasympathetic
33
Q

what plexus does cranial nerve X form part of and what does it innervate?

A

oesophageal plexus
- innervates the smooth muscle of oesophagus

34
Q

name two branches of CN X that innervate the muscles of the larynx

A

left recurrent laryngeal nerve
external branch of superior laryngeal nerve

35
Q

which type of fibres are present in cranial nerve XI?

A

motor (trapezius and SCM)

36
Q

what type of fibres are present in CN XII?

A
  • motor > intrinsic and extrinsic tongue muscles except for palatoglossus
37
Q

which of the cranial nerves have a parasympathetic component?

A

oculomotor
facial
glossopharyngeal
vagus
so 3, 7, 9 and 10

38
Q

which cranial nerves are attached directly to the brain?

A

olfactory and optic

39
Q

which cranial nerves are attached directly to midbrain?

A

III and IV

40
Q

which is the only cranial nerve to arise from the posterior aspect of the brain?

A

trochlear IV

41
Q

which cranial nerves are attached directly to the medulla?

A

IX, X, XI, XII

42
Q

which cranial nerve(s) are attached directly to the pons?

A

trigeminal V

43
Q

which cranial nerves are attached directly to the pontomedullary junction?

A

VI, VII, VIII

44
Q

which cranail nerve can be tested by the pupillary light reflex?

A

oculomotor nerve CN III

45
Q

which cranial nerve can be tested by touch over the surface of the cheek?

A

trigeminal nerve CN V

46
Q

what cranial nerve would you be testing if you asked a patient to stick their tongue out?

A

hypoglossal CN XII

Neuroanatomy (11 decks)

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