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Intro to Cranial Nerves Flashcards

1
Q

general afferent fibers

A

sensory

have cell bodies in either dorsal root ganglia or nuclei/ganglia of specific cranial nerves

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2
Q

GSA

A

general somatic afferent

exteroreceptive impulses - pain temp touch
-from epithelium of ectodermal origin

proprioceptive impulses - tendons, joints

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3
Q

epithelium of ectodermal origin

A 
all skin
ling of external ear
tympanic membrane
conjuctiva covering palebral surface of eye
lining of external nares
nasal cavity
paranasal sinuses
lining of mouth
anterior 2/3 of tongue
dura mater
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4
Q

GVA

A

general visceral afferent

sensory impulses - pain
-from visceral structures of endoderm origin

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5
Q

visceral structures of endoderm origin

A 
posterior third of tongue
ducts of parotid gland
carotid sinus
pharynx
pharyngotympanic tube and middle ear
bronchial tree
larynx
esophagus
gut
pancreaticohepatic duct
lining of genitourinary tract
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6
Q

tongue innervation

A

anterior 2/3 GSA

posterior 1/3 GVA

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7
Q

blood vessel innervation

A

mesoderm derivative

still supplied by visceral afferents

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8
Q

special afferent fibers

A

only in cranial nerves

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9
Q

SSA

A

special somatic afferent

vision, hearing, equilibrium

ear and eye

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10
Q

SVA

A

special visceral afferent

olfactory and gustation

named visceral - because of functional association with the GI tract

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11
Q

general efferent fibers

A

motor fibers to muscles of body

except branchiomeric muscles

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12
Q

branchiomeric muscles

A

develop from pharyngeal arches

not somites

innervation is SVE

muscles of mastication, facial expression, pharynx, palate, larynx

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13
Q

GSE

A

general somatic efferent

motor impulses to somatic skeletal muscle

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14
Q

GVE

A

general visceral efferent

autonomics to smooth muscle in gut tube, blood vessels, cardiac muscle, glandular secretion

subdivided - S and PS and found in spinal and some cranial nerves

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15
Q

special efferent fibers

A

cranial nerves

innervate specialized area of skeletal muscle

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16
Q

SVE

A

special visceral efferent

skeletal muscles derived from pharyngeal arch mesoderm

NO autonomics

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17
Q

SSE

A

special somatic efferent

reflexively influence sensory input to ear

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18
Q

CN I

A

olfactory nerve

SVA

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19
Q

olfactory nerve

A

CN I SVA

sense of smell

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20
Q

destination of CN I

A

to olfactory striae
lateral - piriform cortex in anterior temoral lobe
medial - through anterior commisure to contralateral olfactory structures

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21
Q

CN II

A

optic nerve

SSA

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22
Q

optic nerve

A

CN II SSA

afferent fibers of retina - sense of sight

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23
Q

destination of CN II

A

medial fibers decussate and join lateral fibers of opposite side

terminate at lateral geniculate bodies of thalamus
-hen to occipital lobe

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24
Q

CN III

A

oculomotor nerve

GSE, GVE-P

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25
oculomotor nerve GSE component
motor to extra-ocular muscles of eye - rotational movement - 4 of 6 - superior, medial, inferior recti, inferior oblique AND superior eyelid
26
oculomotor nerve GVE-P component
parasympathetic to intra-ocular muscles - change shape of lense for accomodation - narrowing pupil via inferior division of CN III (ciliary ganglion)
27
inferior division of CN III
oculomotor nerve GVE-P component ciliary ganglion
28
CN IV
trochlear nerve | GSE
29
trochlear nerve
CN IV GSE innervation of one of extraocular eye muscle -superior oblique (utilizes pulley)
30
innervation of extraocular muscles of eye
CN III - superior, medial, inferior recti, inferior oblique CN IV - superior oblique CN VI - lateral rectus
31
CN V
trigeminal nerve | GSA and SVE
32
GSA of trigeminal nerve
major sensory nerve of head -scalp, face, conjuctiva, nasal cavity, paranasal sinuses, oral cavity, outer ear, external auditory meatus, tympanic membrane, dura mater all proprioceptive to head muscles
33
proprioception of all head muscles
GSA of trigeminal nerve
34
SVE of trigeminal nerve
motor to muscles of pharyngeal arch - specifically first arch - mastication, mylohyoid, anterior belly digastric, tensor veli palatini, tensor tympanic muscles
35
carried on trigeminal nerve
GVE-P of CN III, VII, and IX (3, 7, 9) smooth muscles of eye, glands of head (both mucous and salivary)
36
CN VI
abducens | GSE
37
abducens nerve
CN VI GSE innervates extra-ocular eye muscle - lateral rectus
38
CN VII
facial nerve | SVE, GSA, SVA, GVA, GVE-P
39
facial nerve
CN VII
40
sensory roots of trigeminal
V1 - opthalmic V2 - maxillary V3 - mandibular
41
motor root of trigeminal
distributed via mandibular (V3) to first pharyngeal arch muscles
42
SVE of facial nerve
motor to skeletal muscles of second arch | -facial expression, stylohyoid, posterior belly of digastric, stapedius
43
GSA of facial nerve
sensory to portion of skin of external ear and external auditory meatus
44
SVA of facial nerve
taste - anterior 2/3 of tongue via chorda tympani
45
GVA of facial nerve
sensory to upper pharynx
46
GVE-P of facial nerve
parasympathetic to lacrimal gland, nasal, palatal, oral, pharyngeal mucous glands, submandibular and siblingual salivary glands
47
distribution of facial GVE-P to lacrimal, nasal, palatal, oral, pharyngeal mucous glands
- greater pertosal nerve | - pterygopalatine ganglion
48
distribution of facial GVE-P to submandibular and sublingual glands
chorda tympani | submandibular ganglion
49
CN VIII
vestibulocochlear nerve | SSA SSE
50
vestibulocochlear nerve
CN VIII | SSA SSE
51
SSA of vestibulocochlear nerve
afferent - organ of corti (hearing) | afferent - semicircular canals, utricle, saccule (EQ)
52
SSE of vestibulocochlear nerve
motor fibers modifying auditory input
53
CN IX
glossopharyngeal nerve | SVE, GSA, SVA, GVA, GVE-P
54
SVE of glossopharyngeal nerve
motor to third pharyngeal arch - stylopharyngeus
55
GSA of glossopharyngeal nerve
sensory to portion of skin of external ear
56
SVA of glossopharyngeal nerve
taste from posterior third of tongue
57
GVA of glossopharyngeal nerve
sensory to epithelium of endoderm origin | -pharynx, middle ear, internal tympanic membrane, tonsils, posterior tongue, parotid gland, carotid sinus
58
GVE-P of glossopharyngeal nerve
secretory fibers to parotid salivary gland via lesser petrosal nerve and otic ganglion
59
CN X
vagus nerve | SVE, GSA, SVA, GVA, GVE-P
60
vagus nerve
CN X
61
SVE of vagus nerve
motor to arch 4 and 6 muscles
62
GSA of vagus nerve
cutaneous innervation of skin of external ear, external auditory meatus, external surface of tympanic membrane, dura mater of posterior cranial fossa
63
SVA of vagus nerve
taste from epiglottic surface of tongue | -area of epiglottic valleculae
64
GVA of vagus nerve
sensory innervation to epithelium of endoderm origin tongue, larynx, respiratory system, heart, gut tube, capsule of visceral organs, gonads
65
GVE-P of vagus nerve
parasympathetics to mucous in larynx, smoot m of gut tube glands, distal third of transverse colon, respiratory system, cardiac muscles
66
CN XI
spinal accessory nerve | GSE
67
spinal accessory nerve
CN XI GSE - motor to sternocleidomastoid and trapezius muscle
68
CN XII
hypoglossal nerve | GSE
69
hypoglossal nerve
CN XII GSE - motor to tongue
70
GSA nerves
general somatic afferent V, VII, IX, X 5, 7, 9, 10
71
GSE nerves
general somatic efferents III, IV, VI, XI, XII 3 ,4 ,6 ,11,12
72
GVA nerves
general visceral afferents VII, IX, X 7, 9, 10
73
GVE nerves
general visceral efferents III, VII, IX, X 3, 7, 9, 10
74
SVA nerves
special visceral afferents I, VII, IX, X 1, 7, 9, 10
75
SVE nerves
special visceral efferents V, VII, IX, X 5, 7, 9, 10
76
SSA nerves
special somatic afferent II, VIII 2, 7
77
SSE nerves
special somatic efferents VIII 8

Neuro Exam 1 (17 decks)

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