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BDS3 ANATOMY > 12 - Cranial nerves and foramina of the skull > Flashcards

12 - Cranial nerves and foramina of the skull Flashcards

1
Q

What is CN I?

A

Olfactory nerve

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2
Q

What is CN II?

A

Optic 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

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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

Spinal or accessory nerve

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12
Q

What is XII?

A

Hypoglossal nerve

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13
Q

What is the function of CN I?

A

Sense of smell, from receptor cells in nasal mucosa

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14
Q

What is the function of CN II?

A

Vision, from retina to brain

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15
Q

What is the function of CN III?

A
  • innervates muscles of the eye including levator palpebrae, inferior oblique and the rectus muscles
  • innervates sphincter pupillae and ciliary muscles
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16
Q

What is the function of CN IV?

A

Innervates superior oblique muscle (muscle of the eye)

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17
Q

What is the function of CN V1?

A

Sensation of:
- upper eyelid
- bridge and tip of the nose
- forehead

18
Q

What is the function of CN V2?

A

Sensation of:
- maxillary teeth and gingivae
- lower eyelid
- anterior temporal region
- cheekbones
- ala of the nose
- upper lip

19
Q

What is the function of CN V3?

A

Sensation of:
- mandibular teeth and gingivae
- posterior temporal region
- anterior ear
- skin over the jaw
- lower lip

innervates MOMs

20
Q

What is the function of CN VI?

A

Innervates lateral rectus which abducts the eye

21
Q

What is the function of CN VII?

A

Special sensation of:
- auricle
- external acoustic meatus
- anterior 2/3 of tongue

Parasympathetic:
- secretomotor in submandibular and sublingual glands
- lacrimal gland
- nasal and oral mucosa

Innervates muscles of facial expresion

22
Q

What is the function of CN VIII?

A

Vestibular branch - balance and equilibrium
Cochlear branch - hearing

23
Q

What is the function of CN IX?

A
  • sensory and taste from posterior 1/3 of tongue
  • sensation from the carotid body
  • secretomotor in the parotid
  • innervates muscles which assist in swallowing and speaking
24
Q

What is the function of CN X?

A
  • taste from palate and epiglottis
  • gag reflex
  • parasympathetic from thoracic and abdominal viscera
25
Q

What is the function of CN XI?

A

Innervates:
- SCM
- trapezius
- muscles of the soft palate

26
Q

What is the function of CN XII?

A

Innervates all muscles of the tongue except for palatoglossal by CN X)

27
Q

Which structures pass through the foramina of cribriform plate?

A

Olfactory nerve (CN I)

28
Q

Which structures pass through the optic canal?

A
  • Optic nerve (CN II)
  • Ophthalmic artery
29
Q

Which structures pass through the superior orbital fissure?

A
  • Occulomotor nerve (CN III)
  • Trochlear nerve (CN IV)
  • Ophthalmic div of CN V1
  • Abducent nerve (CN VI)
  • Superior ophthalmic vein
30
Q

Which structures pass through the internal acoustic meatus?

A
  • Facial nerve (CN VII)
  • Vestibulocochlear nerve (CN VIII)
  • Labyrinthe artery and vein
31
Q

Which structures pass through the hypoglossal canal?

A

Hypoglossal nerve (CN XII)

32
Q

Which structures pass through the supra-orbital notch?

A

Supra-orbital nerve and vessels (CN V1)

33
Q

Which structures pass through the infra-orbital foramen?

A

Infra-orbital nerve and vessels (CN V2)

34
Q

Which structures pass through the mental foramen?

A

Mental nerve and vessels (CN V3)

35
Q

Which structures pass through the zygomaticofacial foramen?

A

Zygomaticofacial nerve

36
Q

Which structures pass through the foramen rotundum?

A

Maxillary div of CN V2

37
Q

Which structures pass through the foramen ovale?

A

Mandibular div of CN V3

38
Q

Which structures pass through the carotid canal?

A

ICA

39
Q

Which structures pass through the foramen spinosum?

A

Middle meningeal artery

40
Q

Which structures pass through the jugular foramen?

A
  • IJV
  • Glossopharyngeal nerve (CN IX)
  • Vagus nerve (CN X)
  • Spinal accessory nerve (CNXI)
41
Q

Which structures pass through the foramen magnum?

A
  • spinal cord
  • Vertebral arteries
  • Roots of spinal accessory nerve
42
Q

Which structures pass through the stylomastoid foramen?

A

Facial nerve (CN VII)

BDS3 ANATOMY (27 decks)

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