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Neuro Exam 1 > Intro to Cranial Nerves > Flashcards

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
Q

oculomotor nerve GSE component

A

motor to extra-ocular muscles of eye

  • rotational movement
  • 4 of 6 - superior, medial, inferior recti, inferior oblique AND superior eyelid
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26
Q

oculomotor nerve GVE-P component

A

parasympathetic to intra-ocular muscles

  • change shape of lense for accomodation
  • narrowing pupil

via inferior division of CN III (ciliary ganglion)

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27
Q

inferior division of CN III

A

oculomotor nerve GVE-P component

ciliary ganglion

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28
Q

CN IV

A

trochlear nerve

GSE

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29
Q

trochlear nerve

A

CN IV GSE
innervation of one of extraocular eye muscle
-superior oblique (utilizes pulley)

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30
Q

innervation of extraocular muscles of eye

A

CN III - superior, medial, inferior recti, inferior oblique
CN IV - superior oblique
CN VI - lateral rectus

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31
Q

CN V

A

trigeminal nerve

GSA and SVE

32
Q

GSA of trigeminal nerve

A

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
Q

proprioception of all head muscles

A

GSA of trigeminal nerve

34
Q

SVE of trigeminal nerve

A

motor to muscles of pharyngeal arch

  • specifically first arch
  • mastication, mylohyoid, anterior belly digastric, tensor veli palatini, tensor tympanic muscles
35
Q

carried on trigeminal nerve

A

GVE-P of CN III, VII, and IX (3, 7, 9)

smooth muscles of eye, glands of head (both mucous and salivary)

36
Q

CN VI

A

abducens

GSE

37
Q

abducens nerve

A

CN VI GSE

innervates extra-ocular eye muscle - lateral rectus

38
Q

CN VII

A

facial nerve

SVE, GSA, SVA, GVA, GVE-P

39
Q

facial nerve

40
Q

sensory roots of trigeminal

A

V1 - opthalmic
V2 - maxillary
V3 - mandibular

41
Q

motor root of trigeminal

A

distributed via mandibular (V3)

to first pharyngeal arch muscles

42
Q

SVE of facial nerve

A

motor to skeletal muscles of second arch

-facial expression, stylohyoid, posterior belly of digastric, stapedius

43
Q

GSA of facial nerve

A

sensory to portion of skin of external ear and external auditory meatus

44
Q

SVA of facial nerve

A

taste - anterior 2/3 of tongue via chorda tympani

45
Q

GVA of facial nerve

A

sensory to upper pharynx

46
Q

GVE-P of facial nerve

A

parasympathetic to lacrimal gland, nasal, palatal, oral, pharyngeal mucous glands, submandibular and siblingual salivary glands

47
Q

distribution of facial GVE-P to lacrimal, nasal, palatal, oral, pharyngeal mucous glands

A
  • greater pertosal nerve

- pterygopalatine ganglion

48
Q

distribution of facial GVE-P to submandibular and sublingual glands

A

chorda tympani

submandibular ganglion

49
Q

CN VIII

A

vestibulocochlear nerve

SSA SSE

50
Q

vestibulocochlear nerve

A

CN VIII

SSA SSE

51
Q

SSA of vestibulocochlear nerve

A

afferent - organ of corti (hearing)

afferent - semicircular canals, utricle, saccule (EQ)

52
Q

SSE of vestibulocochlear nerve

A

motor fibers modifying auditory input

53
Q

CN IX

A

glossopharyngeal nerve

SVE, GSA, SVA, GVA, GVE-P

54
Q

SVE of glossopharyngeal nerve

A

motor to third pharyngeal arch - stylopharyngeus

55
Q

GSA of glossopharyngeal nerve

A

sensory to portion of skin of external ear

56
Q

SVA of glossopharyngeal nerve

A

taste from posterior third of tongue

57
Q

GVA of glossopharyngeal nerve

A

sensory to epithelium of endoderm origin

-pharynx, middle ear, internal tympanic membrane, tonsils, posterior tongue, parotid gland, carotid sinus

58
Q

GVE-P of glossopharyngeal nerve

A

secretory fibers to parotid salivary gland

via lesser petrosal nerve and otic ganglion

59
Q

CN X

A

vagus nerve

SVE, GSA, SVA, GVA, GVE-P

60
Q

vagus nerve

61
Q

SVE of vagus nerve

A

motor to arch 4 and 6 muscles

62
Q

GSA of vagus nerve

A

cutaneous innervation of skin of external ear, external auditory meatus, external surface of tympanic membrane, dura mater of posterior cranial fossa

63
Q

SVA of vagus nerve

A

taste from epiglottic surface of tongue

-area of epiglottic valleculae

64
Q

GVA of vagus nerve

A

sensory innervation to epithelium of endoderm origin

tongue, larynx, respiratory system, heart, gut tube, capsule of visceral organs, gonads

65
Q

GVE-P of vagus nerve

A

parasympathetics to mucous in larynx, smoot m of gut tube glands, distal third of transverse colon, respiratory system, cardiac muscles

66
Q

CN XI

A

spinal accessory nerve

GSE

67
Q

spinal accessory nerve

A

CN XI

GSE - motor to sternocleidomastoid and trapezius muscle

68
Q

CN XII

A

hypoglossal nerve

GSE

69
Q

hypoglossal nerve

A

CN XII

GSE - motor to tongue

70
Q

GSA nerves

A

general somatic afferent
V, VII, IX, X
5, 7, 9, 10

71
Q

GSE nerves

A

general somatic efferents
III, IV, VI, XI, XII
3 ,4 ,6 ,11,12

72
Q

GVA nerves

A

general visceral afferents
VII, IX, X
7, 9, 10

73
Q

GVE nerves

A

general visceral efferents
III, VII, IX, X
3, 7, 9, 10

74
Q

SVA nerves

A

special visceral afferents
I, VII, IX, X
1, 7, 9, 10

75
Q

SVE nerves

A

special visceral efferents
V, VII, IX, X
5, 7, 9, 10

76
Q

SSA nerves

A

special somatic afferent
II, VIII
2, 7

77
Q

SSE nerves

A

special somatic efferents
VIII
8

Neuro Exam 1 (17 decks)

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