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Neurobiology I > Lecture 5- CN and Neuroforamina > Flashcards

Lecture 5- CN and Neuroforamina Flashcards

1
Q

Which CNs course through the internal acoustic meatus?

A

VII and VIII

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2
Q

Which CN belongs to the CNS?

A

Optic N. (II)

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3
Q

12 pairs of CNs
Attachments:

1 at the telencephalon: ________
1 at the diencephalon: ________
9 at the brainstem: _________
1 at the spinal cord: _________

A

CN I- olfactory n.
CN II- optic n.
CN III- X, XII
CN XI- spinal accesory

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4
Q

Which CNs attach to the middle brain?
Which neuroforamina do they course through?

A

CN III and IV
superior orbital fissure and is formed by the sphenoid bone

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5
Q

Which CNs course through the superior orbital fissure?

A

III
IV
VI
V- division 1 (ophthalmic)

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6
Q

Which CN course through the foramen ovale?

A

V- division 3 (mandibular)

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7
Q

Which CNs course through the jugular foramen?

A

IX, X, XI

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8
Q

What structure goes through the foramen magnum?

A

Medulla Oblongata- to form the spinal cord

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9
Q

Which CNs have all 4 functional components?

A

VII, IX, X

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10
Q

CN II courses through what structure?

A

Optic canal

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11
Q

Which CN courses through the foramen rotundum?

A

V- division 2 (maxillary)

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12
Q

CN I courses through what structure?

A

Cribriform Plate

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13
Q

What artery courses through the foramen spinosum?

A

Middle Meningeal Artery

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14
Q

The carotid canal is for which artery to run through?

A

Internal carotid artery

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15
Q

CN XII courses through what structure?

A

hypoglossal canal

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16
Q

What are these structures?

A
  1. Optic Canal
  2. Superior Orbital Fissure
  3. Foramen Rotundum
  4. Foramen ovale
  5. Internal Acoustic Meatus
  6. Jugular Foramen
  7. Foramen Magnum
  8. Hypoglossal Canal
  9. Carotid Canal
  10. Foramen Spinosum
  11. Cribriform plate
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17
Q

Which CN is the only one that attaches at the posterior or dorsal midbrain?

A

CN IV

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18
Q

CNs III and IV are located at the _______ ________ level

A

superior colliculus

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19
Q

Which CNs are located at the Medulla?

A

IX, X, XII

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20
Q

Which two CNs are located at the posterior olive?

A

IX, X

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21
Q

CN ____ is between the olive and pyramid

A

X

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22
Q

Which CN does not affect/compromise the spinal cord?

A

CN II

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23
Q

Development of the Central Canal and 4th Ventricle

Spinal cord:
1.
2.
3.

A

Ventral Motor
Sulcus Limitans
Dorsal Sensory

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24
Q

Development of the Central Canal and 4th Ventricle

Brainstem
1.
2.
3.

A

Medial Motor
Sulcus Limitans
Lateral sensory

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25
Q

Label this

A
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26
Q

Which brainstem region is shown here? Which structures are indicated by the ABCs? What view?
A.
B.
C.

Which CN can you see?

A

A. cerebral peduncle
B. Substantia Nigra
C. Red Nucleus

CN II @ the superior colliculus level

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27
Q

CN Nuclei in the brainstem
Medial: ________
Lateral: _______

A

Motor
Sensory

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28
Q

What do these mean?

A

Sp- special sensation
Ss- somatic sensory
Vs- visceral sensory
Sm- somatic motor
P: branchial motor
Vm: visceral motor

29
Q

Location

CN V nuclei is at the _______ to _______

The MESENCEPHALIC nucleus is a ____________

A

midbrain; C2

ganglion

30
Q

Which CNs don’t have their own nuclei, so they “feed off” of CN V?

A

VII, IX, X

31
Q

CN I: __________ nerve is located in the __________

A

Olfactory
telencephalon

32
Q

Which CNS condition can compromise vision and cause a decrease of the myelin sheath?

A

M. S.

33
Q

Label this

A
34
Q

Which CN specifically involves lens complexity and activity in the iris?

A

CN III- oculomotor n.

35
Q

What are the 4 + 1 mm> involving the oculomotor nerve?

A
  1. Levator Palpebrae Superioris
  2. Sup/Inf Rectus
  3. Sup/Inf Oblique
36
Q

Main functions of the trigeminal nerve are
1.
2.
3.

A

Smell
Chewing
Taste

37
Q

There are ____ CNs that are parsympathetic

A

4

38
Q

The main function of CN IX is ______ and ______

A

swallow
taste

39
Q

Cogenital Torticollis is associated with what nerve and main muscle?

The baby will have symptoms/issues with what two actions?

A

CN XI
SCM
ipsilateral SB and contralateral ROT

40
Q

Which CN is the only one that descends into the cavity and involves our organs?

A

CN X: Vagus N.

41
Q

What are the two salivary glands?

A

Submandibular
Sublingual

42
Q

The 2 main functions of the facial nerve are what?

A

facial expression
and taste

43
Q

Shared Locations
CN IX/X: ___________ nucleus ( ______ )

A

ambiguous
Sm

44
Q

Shared Locations

One nuclei, 2 components
Ambiguous nuclei: ______ and ______ for CN X

A

Vm, Sm

45
Q

CN I

Olfactory bulb: _____
Olfactory nerves: _______

Courses through the _______ _______and shapes the _______ bone

( ______ ) and function is ________/________

A

CNS
PNS

cribriform plate
ethmoid
Vs: olfaction, smell

46
Q

CN II: ________ nerve is located in the __________

Courses through the _______ _______ and shapes the ______ bone

( __ ) and function is __________

A

Optic
diencephalon
optic canal
sphenoid bone
Vs: vision

47
Q

CN III: ________ nerve is located in the _________ and at the ________ ________level

Courses through the ________ __________ __________ and shapes the _______ bone

A

Oculomotor
midbrain
superior colliculus

superior orbital fissure
sphenoid

48
Q

CN III has two functional components:

( ___ )- 4 + 1 mm. _______ motions
( ___ )- ________ ganglion, ________ ocular mm.

A

Sm: eyeball
Vm: ciliary; intrinsic

49
Q

CN IV: ________ nerve

Courses through the _______ _______ _______ and shapes the _____ bone

( ____ ): ________ ________ muscle

A

Trochlear
Superior Orbital fissure
sphenoid
Sm: Superior Oblique

50
Q

CN V: _________ nerve

is located on the ___-_____ ______
and shapes the _____ bone

A

Trigeminal
mid- lateral
sphenoid

51
Q

Trigeminal Nerve

V1- _________ and goes through the ______ _______ _______
( ____ )

V2- _________, and goes through the _______ ______
( ____ )

V3: ________ and goes through the _______ _______
( ____ ): smell, flavor
somatosensory, cutaneous

( ___ ): mastication, sound intensity, swallowing

A

Ophthalmic- superior orbital fissure, Ss

Maxillary- foramen rotundum, Ss

Mandibular- foramen ovale
Ss
Sm

52
Q

CN VI: _________. nerve

Located on the _______ __________ __________

Courses through the ______ _____ ______ and shapes the _______ bone

( ____ ): Which muscle and does what?

A

Abducens
Medial Pontomedullary Junction

superior orbital fissure, sphenoid

Sm: lateral rectus and moves the eye away from the nose

53
Q

Which two CNs only supply one muscle?

A

CN IV and VI

54
Q

CN X: ________ nerve

Located on the _______ and is posterior to the _______

Courses through the ______ _______ and is associated with the ______ and ________ bones

A

Vagus

medulla, olive

jugular foramen, temporal, occipital

55
Q

CN VII: _______ nerve

Located on the ________ _________ __________

Courses through the _______ _______ ______ and shapes the ______ bone

A

Facial
Lateral pontomedullary junction

Internal Acoustic Meatus
temporal

56
Q

Shared Locations
CN VII/IX/X: CN V nucleus is _________ _______
__________ nucleus ( ____ )

A

Somatic Sensory
solitary; Vs

57
Q

CN XII clinical issue:

If there is a problem with protruding the tongue out, the _________ mm. is compromised and will shift to the _______ side

A

genioglossus

weaker

58
Q

CN XII clinical issue:

Stroke patients would present with the tongue shifting to the ________ side of where the stroke occurred

Ex. R sided stroke = tongue shifted to the _____ side

A

opposite

Left

59
Q

CN VIII: _____________ nerve

Located on the _______ ________ _______

Courses through the _______ _______ _____ and shapes the ______ bone

A

Vestibulocochlear

Lateral pontomedullary junction

Internal Acoustic Meatus

temporal

60
Q

Facial Nerve (all 4 functional components)

Sensory
Ss- _______ _______

Vs- Anterior ______ of the _____ for taste

Motor
Sm- facial ________, _______ _______ control

Vm- _____________ ganglion: _______ gland, ______ glands

__________ ganglion: ______ glands

A

External Ear
2/3, tongue

expression, sound intensity

pterygopalantine, lacrimal, mucosal

Submandibular, salivary

61
Q

Vestibulocochlear Nerve

Functional components ( ___ )
__________: vestibular division
_________: cochlear division

A

Vs

Propioception
Hearing

62
Q

CN IX: __________ nerve

Is located on the ______ and is posterior to the _______

Courses through the _______ _________ and is associated with the ______ and ________ bones

A

Glossopharyngeal

medulla
olive

jugular foramen
temporal; occipital

63
Q

Glossopharyngeal Nerve
All 4 Functional Components:

Sensory
Ss: _____ cavity, and posterior ____ of _______

Vs: posterior ______ of ______ for taste

Motor
Sm: ____________
Vm: _______ ganglion, _______ gland

A

tympanic, 1/3, tongue

1/3, tongue

stylopharyngeus

otic, parotid

64
Q

Vagus Nerve- all 4 components

Sensory
Ss: _______ _______, ________/________

Vs: ________ for taste, ________ _______ until hindgut
* _______glossus
* _______glossus

Motor
Sm: ________, ________/_________/___________

Vm: _________ ________ until hindgut

A

external ear, pharynx/llarynx

epligottis, internal organs,
palato, stylo

tongue, pharynx, larynx, esophagus

internal organs

65
Q

CN XI: ________ ________ nerve

Located at the ______ ________ _______ _________

Associated with the ______ and _______ bones

Sm: Which two muscles?

A

Spinal Accessory

lateral cervical spinal cord

temporal and occipital

trapezius, SCM

66
Q

CN XII: _________ nerve

located on the ______ between the ______ and olive

Courses through the _______ ______ and is associated with the _________ bone

( ____): tongue functions

A

Hypoglossal

medulla

pyramid

hypoglossal canal

occipital

Sm

67
Q

Which cranial nerve courses through the foramen?

Which functional component?

A

Foramen ovale: CN V division 3
Ss: mandible to temporal

Sm: mastication, swallowing, sound intensity, depression of mandible

68
Q

Which functional components are in CN II, CN III, CN V, and CN VII?

CN II- ______
CN III- _________
CN V- ____________
CN VII- __________

A

Vs
Sm/Vm
Sm/Ss
Sm/Ss/Vm/vS

Neurobiology I (13 decks)

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