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BMB Test 2 > B7-026 Cranial Nerves 2 > Flashcards

B7-026 Cranial Nerves 2 Flashcards

1
Q

which CNs come out of the endbrain?

A

I
II

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2
Q

which CNs come out of the midbrain?

A

III
IV

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3
Q

which CNs come out of the pons?

A

V
VI
VII
VIII

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4
Q

which CNs come out of the medulla?

A

IX
X
XI
XII

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5
Q

in the spinal cord, the sensory roots are […]

A

dorsal

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6
Q

in the spinal cord, the motor roots are […]

A

ventral

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7
Q

in the brainstem, the sensory nuclei are […]

A

lateral

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8
Q

in the brainstem, the motor nuclei are […]

A

medial

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9
Q

in the brainstem, the long tracts travel through the […] part

A

ventral

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10
Q

in the brainstem, the CN nuclei are the most […]

A

dorsal

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11
Q

most medial structures in the brain stem [4]

somatic efferents

A

midbrain: oculomotor, trochlear
pons: abducens
medulla: hypoglossal

(analogous to anterior horn cells)

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12
Q

most lateral structures in the brain stem [3]

general somatic afferents

A

midbrain: mesencephalic (unconscious proprioception)
pons: proper (jaw fine touch and proprioception)
medulla: descending (pain and temp)

all part of trigeminal

(analogous to somatic afferents)

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13
Q

parasympathetic column of the brainstem [4]

general visceral efferents and visceral afferents

A

midbrain: pupillomotor (EW)
pons: S salivatory, I salivatory
medulla: dorsal nucleus of vagus, gustatory nucleus (VA)

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14
Q

visceral afferents to baroreceptors and chemoreceptors of the carotid body

A

IX glossopharyngeal

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15
Q

visceral afferents to baroreceptors and chemoreceptors of the aortic arch

A

X vagus

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16
Q

posterior 1/3 of tongue

A

glossopharyngeal

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17
Q

sensory to anterior 2/3 of tongue

A

lingual branch of V3 (mandibular of trigeminal)

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18
Q

taste to anterior 2/3 of tongue

A

chorda tympani of CN VII

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19
Q

branchial arch derived efferents [4]

special visceral efferents

A

pons: motor nucleus of V, facial N
medulla: nucleus ambiguus
cervical SC: accessory spinal

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20
Q

trigeminal motor nucleus provides innervation to […]

A

muscles of mastication

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21
Q

facial nucleus provides motor innervation to […]

A

facial muscles

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22
Q

special somatic afferents of brainstem [2]

A

vestibular
cocclear

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23
Q

motor nucleus of CN III

A

oculomotor in midbrain

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24
Q

parasympathetic nucleus of CN III

A

pupillomotor (Edinger-westphal)

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25
Q

innervates pupillary constriction

A

CN III

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26
Q

innervates levator palpebrae

A

CN III

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27
Q

innervates medial rectus, superior rectus, inferior rectus, and inferior oblique muscles of the eye

A

CN III

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28
Q

motor nucleus of CN IV

A

trochlear (midbrain)

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29
Q

innervates the superior oblique muscle

A

CN IV

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30
Q

motor nucleus of CN VI

A

abducens (pons)

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31
Q

innervates the lateral rectus muscle

A

abducens CN VI

32
Q

most general somatic sensory afferent information is brought into the CNS via CN […]

A

V trigeminal

33
Q

general sensory somatic component of CN VII

A

ear region sensation

34
Q

motor nucleus of CN VII

A

facial nucleus (pons)

35
Q

provides motor innervation to face muscle, stapedius, and digastric

A

CN VII

36
Q

innervates taste to anterior 2/3 of tongue

A

CN VII

37
Q

general visceral efferent component of CN VII

A

salivation via superior salivatory nucleus (pons)

38
Q

provides sensation to the posterior pharynx and a bit of the ear

A

CN IX

39
Q

CN IX supplies innervation to the parotid gland via the […] nucleus

A

inferior salivatory (pons)

40
Q

CN IX supplies innervation to stylopharyngeous muscle via […] nucleus

A

nucleus ambiguus (medulla)

41
Q

CN IX provides sensation to the posterior pharynx via […] nucleus

A

gustatory (solitary) nucleus (medulla)

42
Q

innervates the pharyngeal and laryngeal muscles

A

CN X

43
Q

CN X innervates the pharyngeal and laryngeal muscles via […] nucleus

A

nucleus ambiguus (medulla)

44
Q

innervates trapezius and SCM

A

CN XI

45
Q

CN XI innervates trapezius and SCM via […] nucleus [2]

A

nucleus ambiguus (medulla)
accessory nucleus (cervical cord)

46
Q

CN XII innervates the intrisic muscles of the tongue via […] nucleus

A

hypoglossal (medulla)

47
Q

afferent of gag reflex

A

CN IX glossopharyngeal

48
Q

efferent of gag reflex (elevation of palate)

A

CN X vagus

49
Q

afferent of the corneal reflex

A

CN V trigeminal

50
Q

efferent of corneal reflex (closure of eye)

A

CN VII facial

51
Q

afferent of pupillary light reflex

A

CN II optic

52
Q

efferent of pupillary light reflex

A

CN III occulomotor

53
Q

innervation of the facial motor nucleus is […]lateral

A

contralateral

54
Q

innervation of the spinal accessory portion of the nucleus ambiguus is […]lateral

A

ipsilateral

(SCM and trapezius)

55
Q

except for the facial motor and spinal accessory nuclei, everything else is […]lateral

A

bilateral

56
Q

UMN fibers going to cranial nerve nuclei

A

corticobulbar fibers

57
Q

corticobulbar fibers live in the […] of the internal capsule

A

genu

58
Q

a lesion to the most ventral aspect of the brainstem would likely affect the […] tract

A

corticospinal

59
Q

[…] nucleus of 5 is the sole recipient of non-conscious proprioceptive input into the brain stem

A

mesencephalic nucleus of 5

60
Q

[…] nucleus of 5 receives information about proprioception and fine touch, similar to the DCML

A

main nucleus of 5

61
Q

[…] nucleus of 5 receives pain and temperature sensation

A

descending nucleus of 5

62
Q

[…] nucleus receives information about balance and head movement

A

vestibular nucleus

63
Q

[…] nucleus receives visceral afferent information

A

solitary

64
Q

the SCM is controlled by the […] hemisphere

A

ipsilateral

65
Q

sole target of afferent fibers carrying information in to the brainstem regarding taste

A

gustatory nucleus (in the solitary nucleus)

66
Q

2 CN that carry the bulk of taste input into the gustatory nucles

A

facial
glossopharyngeal

(vagus does a small amount)

67
Q

a lesion in one of the facial nuclei will affect the […] side

A

contralateral

68
Q

a lesion in one of the facial nerves will affect the […] side

A

ipsilateral

69
Q

controls sensation to the pharynx, including the soft palate

A

CN 9

70
Q

controls elevation of the palate

A

CN 10

71
Q

pseudobulbar problems typically cause […] lower cranial nerve abnormalities

A

bilateral

72
Q

a CN V lesion will cause the jaw to deviate […] the side of the lesion

A

toward

due to unopposed force from the opposite pterygoid

73
Q

a CN X lesion will cause the uvula to deviate […] from side of lesion

A

away

weak side collapses and uvula points away

74
Q

a CN XI lesions will result in weakness turning the head to the […] side of lesion and a shoulder droop on […] side of lesion

A

contralateral SCM
ipsilateral shoulder

75
Q

a LMN lesion of CN XII will cause the tongue to deviate […] side of lesion

A

toward (“lick your wounds”)

due to weakened tongue muscles on affected side

BMB Test 2 (17 decks)

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