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Cranial Nerves Flashcards

(75 cards)

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1
Q

name the 12 cranial nerves

A
  1. Olfactory
    1. Optic
    2. Oculomotor
    3. Trochlear
    4. Trigeminal
    5. Abducens
    6. Facial
    7. Vestibulocochlear
    8. Glossopharyngeal
    9. Vagus
    10. Accessory
  2. Hypoglossal
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2
Q

function of olfactory nerve

A

smell

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3
Q

exit foramen of olfactory nerve

A

cribiform plate

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4
Q

what type of info does olfactory carry

A

sensory

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5
Q

where does olfactory nerve end

A

temporal lobe - primary olfactory cortex

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6
Q

where is the cribiform plate

A

ethmoid bone

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7
Q

describe the course of the olfactory nerve

A

olfactory epithelium in nasal cavity → olfactory bulb and tract → primary olfactory cortex

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8
Q

function of optic nerve

A

percieve light in the eye

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9
Q

what type of info travels in optic nerve

A

sensory

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10
Q

exit foramen of the optic nerve

A

optic canal

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11
Q

describe the course of the optic nerve

A

retina → optic nerve → optic chiasm → optic tract → lateral geniculate → optic radiations → visual cortex

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12
Q

functions of oculomotor nerve

A

eye movement
dilates pupil
focuses lens

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13
Q

what type of info is carried in the oculomotor nerve

A

motor and autonomic

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14
Q

exit foramen of oculomotor nerve

A

superior orbital fissure

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15
Q

describe the course of the oculomotor nerve

A

anterior midbrain → lateral wall of cavernous sinus → through common tendinous ring → branches into superior and inferior branches

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16
Q

what muscles of eye movement are innervated by the oculomotor nerve

A

levator palpebrae superioris
superior rectus
inferior oblique
inferior rectus
medial rectus

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17
Q

function of levator palpebrae superioris

A

raises eyelid

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18
Q

function of superior rectus

A

elevates the eye

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19
Q

function of inferior oblique

A

abducts eye

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20
Q

function of inferior rectus

A

adducts and depresses eye

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21
Q

function of lateral rectus

A

abducts eye

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22
Q

function of medial rectus

A

adducts eye

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23
Q

function superior oblique

A

abducts and depresses

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24
Q

function of sphincter muscle

A

dilates pupil

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25
function of ciliary muscle
focuses pupil
26
function of trochlear nerve
movement of eye superior oblique
27
what movement will someone with a trochlear nerve palsy not be able to do
look down and out
28
exit foramen of trochlear nerve
superior orbital fissure
29
describe course of trochlear nerve
posterior midbrain → lateral wall of cavernous sinus
30
is the trochlear nerve within or outwith th common tendinous ring
outwith
31
what type of info does the trochlear nerve carry
motor
32
where does the trigeminal nerve emerge
from brainstem lateral to pons
33
what type of info does the trigeminal nerve carry
sensory and motor and autonomic
34
what are the branches of the trigeminal nerve
ophthalmic - V1 maxillary - V2 mandibular - V3
35
where are the cell bodies of the trigeminal nerve found
trigeminal ganglion
36
function of ophthalmic nerve
sensation to skin about eye and nasal cavity dilates pupil
37
what type of info is carried in the ophthalmic nerve
sensory and autonomic
38
what is the exit foramen of the ophthalmic nerve
superior orbital fissure
39
describe course of ophthalmic nerve
lateral wall of cavernous sinus 3 branches before exit
40
what are the 3 branches of the ophthalmic nerve
nasociliary lacrimal frontal
41
functions of the maxillary nerve
sensation to skin between eye, mouth and maxillary teeth autonomic innervation to lacrimal, nasal palatine and pharyngeal glands
42
what type of info travels in maxillary nerve
autonomic sensory
43
what is the exit foramen for the maxillary nerve
foramen rotundum
44
describe the course of the maxillary nerve
2 branches → pterygopalatine fossa → 4 more branches
45
what is the function of the mandibular nerve
sensation to the temporal region and mandibular teeth autonomic to salivary glands muscles of mastication
46
course of mandibular nerve
6 branches
47
exit foramen of mandibular nerve
foramen ovale
48
function of abducens nerve
movement of eye - lateral rectus
49
exit foramen of abducens nerve
superior orbital fissure
50
is abducens nerve within or outwith common tendinous ring
within
51
what type of info does abducens nerve carry
motor
52
functions of facial nerve
movement of muscles of facial expression salivary and lacrimal glands taste
53
what type of info travels in facial nerve
sensory, motor and autonomic
54
what are the branches of the facial nerve
temporal zygomatic buccal mandibular cervical
55
what are the entrance and exit foramen of the facial nerve
enters internal acoustic meatus exits in the stylomastoid foramen
56
describe the course of the facial nerve
3 x 90 degree turns within facial canal of temporal bone
57
function of vestibulocochlear nerve
balance and hearing
58
what type of info does vestibulocochlear nerve carry
sensory
59
exit foramen of vestibulocochlear nerve
doesn't exit as innervated within the bone
60
where does vestibulocochlear nerve enter the bone
internal acoustic meaus
61
what nerve does the vestibulocochlear nerve travel with
facial nerve
62
what are the functions of the glossopharyngeal nerve
sensation to oropharynx, middle ear, carotid body and sinus and posterior third of tongue motor to stylopharyngeus muscle autonomic to parotid gland
63
exit foramen of glossopharyngeal nerve
jugular foramen
64
describe course of glossopharyngeal nerve
runs between internal jugular and common carotid a. in the neck
65
what are the 6 branches of the glossopharyngeal nerve
tympanic stylopharyngeus tonsillar pharyngeal lingual carotid
66
what type of info does the glossopharyngeal nerve carry
sensory, motor and autonomic
67
functions of vagus nerve
sensation to ear, larynx and pharynx movement of pharynx and larynx parasympathetic to heart and digestive organs
68
what is the exit foramen of the vagus nerve
jugular formaen
69
what type of info does vagus nerve carry
sensory motor and autonomic
70
function of accessory nerve
movement of sternocleidomastoid and trapezius
71
what is the exit foramen of accessory nerve
jugular foramen
72
what is the function of the hypoglossal nerve
movement of tongue, speech and swallowing
73
what type of info travels in hypoglossal nerve
motor
74
exit foramen of hypoglossal nerve
hypoglossal foramen
75
describe course of hypoglossal nerve
descends in neck lateral to ICA and ECA

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