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Neuro Final > Cranial Nerve VII Nuclei > Flashcards

Cranial Nerve VII Nuclei Flashcards

1
Q

facial nerve components

A

motor to mm of facial expression
-SVE

motor to stapedius

autonomics - lacrimal and salivary glands (SL/SM)

afferents - touch pain pharynx, taste anterior 2/3 tongue

sensation to skin inside external ear

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2
Q

innervation of stapedius

A

facial nerve

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3
Q

action of stapedius

A

dampens sound intensity

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4
Q

facial n leads cranial

A

internal acoustic meatus

passes through facial canal in petrous temporal bone

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5
Q

external genu

A

strong bend in facial canal

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6
Q

geniculate ganglion

A

sensory ganglion at external genu

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7
Q

stylomastoid foramen

A

efferent fibers of facial nerve leave here

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8
Q

greater petrosal nerve

A

autonomics from facial nerve to PPG

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9
Q

chorda tympani

A

from facial nerve

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10
Q

facial motor nucleus

A

in pons

-loop aroud the abducens nucleus - internal genu

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11
Q

internal genu

A

from where facial motor nucleus bend around abducens nucleus

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12
Q

lesion to abducens nucleus

A

will almost always impact ipsilateral facial mm.

-bc of internal genu facial motor nucleus

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13
Q

autonomics for facial

A

GVE

-superior salivatory nucleus

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14
Q

GVA - taste from anterior 2/3

A

processed in solitary nucleus

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15
Q

lesion of facial motor nucleus

A

ipsilateral loss of muscles of facial expression

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16
Q

primary motor cortex for face

A

area 4

-facial - lateral

17
Q

UMN for facial nerve?

A

cortex (area 4) to facial motor nucleus

18
Q

lesion at genu of internal capsule

A

no innervation to contralateral lower face muscles (paralysis)

19
Q

lesion to LMN of facial?

A

ipsilateral paralysis of lower and upper face

20
Q

supranuclear facial palsy

A

contralateral paralysis of lower facial mm

can still laugh spontaneously

21
Q

fake vs. happy smile

A

different

happy - automatic
-possibly cingulate gyrus or limbic system

Neuro Final (20 decks)

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