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Neuro Exam II > CN III > Flashcards

CN III Flashcards

1
Q

what are the nuclei of the oculomotor nerve

A

oculomotor nucleus

EW-N

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2
Q

where are the nuclei of oculomotor nerve located

A

rostral midbrain

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3
Q

what are the ganglia of the oculomotor n

A

cilirary

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4
Q

what is the nucleus of the trochlear n

A

trochlear nucleus

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5
Q

where is the nucleus of hte trochlear n located

A

caudal mibrain

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6
Q

a lesion to the MLF segment between the abducen nucleus and the contralateral oculomor nucleus disconnects therese 2 nucleis and results in what

A

inernuclear opthamoplegia

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7
Q

MLF lesion defict

A

lesion damaging one MLF will result in adduction deficit of the ipsilateral eye when gazing to the contralateral side

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8
Q

where is the lesion in ono-and one-half lesion

A

lesion in the vicinity of the abducens nucleus

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9
Q

what does the one-and-one-half lesion damger

A

an entire abducen nucleus

ipisilateral MLF

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10
Q

result of one-and-one-half lesion

A

eye ipsilateral to lesion has no horizontal movment

eye contralateral to lesion can only abduct with nystagmus

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11
Q

function components of CN V

A

GSA, GP, SVE,

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12
Q

GSA of CN V relayhs what

A

touch, pressure, pain, temp from orofacial region

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13
Q

CN V gives GP to what

A

muscles of mastication, extraocular muscles, TMJ, periodontal lig

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14
Q

sensory or motor of divisions of CN V

A

opthammic - sensory
maxillary - senosry
manbidubar - sensory and motor

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15
Q

what is the larger root of CN V

A

sensory

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16
Q

what is the smaller root of CN V

A

motor

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17
Q

trigemnal ganglian

A

sensory

ccontains cell bodies of pseudounipolar neurons

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18
Q

what is the path of ophathalmic and maxillary diisions

A

through the cavernous venous sinus along with CN II, IV, and VI

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19
Q

where does opthalmic division exit the cranium

A

superior orbital fissure

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20
Q

how does maxillary division exit the cranium

A

foramin rotundum

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21
Q

how does mandibular division exit the cranium

A

foramen ovale

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22
Q

where do the central processes of CN V go

A

extend toward brainstem and terminate in trigemn nucler complex

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23
Q

cilary ganglian belongs to waht nerve

A

CN III

24
Q

ciliary ganglion is suspend from

A

opthalmic division

25
Q

what does ciliary ganglion inenrvate

A

sphicter pupillae and ciliary muscles

26
Q

what nerve does pterygopalatine ganglion belong to

A

CN VII

27
Q

pterygopalatine ganglion is suspended from

A

maxillary divsion

28
Q

what does pterygopalatine gangliion innnervate

A

lacrimal galdn
mucus membrane of nasal cavity
some galnds of posterior palate

29
Q

what nerve does submandibula rganglion belong to

A

CN VII

30
Q

what is submandibular ganglion suspended from

A

mandibular division

31
Q

what does submandibular ganglion innervate

A

sublingual and submandibular glands

32
Q

what nerve does otic ganglion belong to

A

CN IX

33
Q

what is otic ganglion suspended fom

A

mandibular dibisio

34
Q

nwhat does otic ganglion innervatee

A

parotid glad

35
Q

what are the 4 nuclei of the trigemenial nerve

A

motor
mesencephalic
main
spinal

36
Q

what is unique about CN V

A

only CN with pain nuclei

37
Q

funfction of mesecephalic nuclei

A

genreal proprioception

38
Q

function of main sensory nuclei

A

fine, detailed, dscrimative touch
genreal sensetion
some proprioceotion

39
Q

where does spinal nucli extend to

A

spinal cord C2-3

40
Q

fiers to spinal trigeminal nucleus travel via _____ after performing hairpin loop at mid-pons

A

spinal trigeminal tract

41
Q

what is the pain path for spinal trigeminal nucleus fibers

A

ventral trigemnal leminscus

42
Q

is spinal trigeminal nucleus contra or ipsilateral

A

contralateral

43
Q

what is spinal trigeminal nucles going to

A

VPM nucleus of thalamus

44
Q

what is the path of exit for primary sensory nucleus

A

dorsal trigemanl leminsurc

45
Q

is primary sensory nucleus contra or ipsilateral

A

ipsilator

46
Q

what is primary sensory nucleus going to

A

VPM of thalamus

47
Q

what nuclei are involved in pain and temperal

A

spinal trigeminal nucleus

48
Q

what is the path of motor nucleuss

A

LMN form motor root, merge with mandibular dvision, exit via foramen ovale

49
Q

lesion to spinal V tract between the midpoints to C2 would lead to

A

loss of pain and temp sensation from ipsilateral side of face

50
Q

lesion to ventral V lemnisuc would lead to

A

loss of pain and temp sensation

dimunutition of tactile sense from contralateral region

51
Q

function of subnucleus oralis

A

processes tactile sensation

52
Q

function of subnucleus interpolaris

A

processes tactile sensation and nocicieption from teeth

53
Q

function of subnucleus caudalis

A

process nocicipation

54
Q

trigeminal neuralgia

A

sharp, excrucitating pain that is one sided

55
Q

what causes trigeminal neuralgia

A

demyelination of CN V as it enters brainstem results in ephaptic transmission of nerve impuslses

56
Q

what a can cause problems for CN V

A

superior cerebellar a

Neuro Exam II (10 decks)

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