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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
innervates pupillary constriction
CN III
26
innervates levator palpebrae
CN III
27
innervates medial rectus, superior rectus, inferior rectus, and inferior oblique muscles of the eye
CN III
28
motor nucleus of CN IV
trochlear (midbrain)
29
innervates the superior oblique muscle
CN IV
30
motor nucleus of CN VI
abducens (pons)
31
innervates the lateral rectus muscle
abducens CN VI
32
most general somatic sensory afferent information is brought into the CNS via CN [...]
V trigeminal
33
general sensory somatic component of CN VII
ear region sensation
34
motor nucleus of CN VII
facial nucleus (pons)
35
provides motor innervation to face muscle, stapedius, and digastric
CN VII
36
innervates taste to anterior 2/3 of tongue
CN VII
37
general visceral efferent component of CN VII
salivation via **superior salivatory nucleus** (pons)
38
provides sensation to the posterior pharynx and a bit of the ear
CN IX
39
CN IX supplies innervation to the parotid gland via the [...] nucleus
inferior salivatory (pons)
40
CN IX supplies innervation to stylopharyngeous muscle via [...] nucleus
nucleus ambiguus (medulla)
41
CN IX provides sensation to the posterior pharynx via [...] nucleus
gustatory (solitary) nucleus (medulla)
42
innervates the pharyngeal and laryngeal muscles
CN X
43
CN X innervates the pharyngeal and laryngeal muscles via [...] nucleus
nucleus ambiguus (medulla)
44
innervates trapezius and SCM
CN XI
45
CN XI innervates trapezius and SCM via [...] nucleus [2]
nucleus ambiguus (medulla) accessory nucleus (cervical cord)
46
CN XII innervates the intrisic muscles of the tongue via [...] nucleus
hypoglossal (medulla)
47
afferent of gag reflex
CN IX glossopharyngeal
48
efferent of gag reflex (elevation of palate)
CN X vagus
49
afferent of the corneal reflex
CN V trigeminal
50
efferent of corneal reflex (closure of eye)
CN VII facial
51
afferent of pupillary light reflex
CN II optic
52
efferent of pupillary light reflex
CN III occulomotor
53
innervation of the facial motor nucleus is [...]lateral
contralateral
54
innervation of the spinal accessory portion of the nucleus ambiguus is [...]lateral
ipsilateral (SCM and trapezius)
55
except for the facial motor and spinal accessory nuclei, everything else is [...]lateral
bilateral
56
UMN fibers going to cranial nerve nuclei
corticobulbar fibers
57
corticobulbar fibers live in the [...] of the internal capsule
genu
58
a lesion to the most ventral aspect of the brainstem would likely affect the [...] tract
corticospinal
59
[...] nucleus of 5 is the sole recipient of non-conscious proprioceptive input into the brain stem
mesencephalic nucleus of 5
60
[...] nucleus of 5 receives information about proprioception and fine touch, similar to the DCML
main nucleus of 5
61
[...] nucleus of 5 receives pain and temperature sensation
descending nucleus of 5
62
[...] nucleus receives information about balance and head movement
vestibular nucleus
63
[...] nucleus receives visceral afferent information
solitary
64
the SCM is controlled by the [...] hemisphere
ipsilateral
65
sole target of afferent fibers carrying information in to the brainstem regarding taste
gustatory nucleus (in the solitary nucleus)
66
2 CN that carry the bulk of taste input into the gustatory nucles
facial glossopharyngeal (vagus does a small amount)
67
a lesion in one of the facial nuclei will affect the [...] side
contralateral
68
a lesion in one of the facial nerves will affect the [...] side
ipsilateral
69
controls sensation to the pharynx, including the soft palate
CN 9
70
controls elevation of the palate
CN 10
71
pseudobulbar problems typically cause [...] lower cranial nerve abnormalities
bilateral
72
a CN V lesion will cause the jaw to deviate [...] the side of the lesion
toward due to unopposed force from the opposite pterygoid
73
a CN X lesion will cause the uvula to deviate [...] from side of lesion
away weak side collapses and uvula points away
74
a CN XI lesions will result in weakness turning the head to the [...] side of lesion and a shoulder droop on [...] side of lesion
contralateral SCM ipsilateral shoulder
75
a LMN lesion of CN XII will cause the tongue to deviate [...] side of lesion
toward ("lick your wounds") due to weakened tongue muscles on affected side

BMB Test 2 (17 decks)

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