Cranial Nerves Flashcards
(108 cards)
1
Q
which nerves exit cerebrum
A
olfactory and optic
2
Q
where do the cranial nerves that don’t exit the cerebrum exit from?
A
brainstem
3
Q
3 divisions of trigeminal nerve
A
ophthalmic, maxillary, mandibular
4
Q
CNI
A
Olfactory
5
Q
CNII
A
Optic
6
Q
CNIII
A
Oculomotor
7
Q
CNIV
A
Trochlear
8
Q
CNV
A
Trigeminal
9
Q
CNV1
A
Ophthalmic
10
Q
CNV2
A
Maxillary
11
Q
CNV3
A
Mandibular
12
Q
CNVI
A
Abducens
13
Q
CNVII
A
Facial
14
Q
CNVIII
A
Vestibulocochlear
15
Q
CNIX
A
Glossopharyngeal
16
Q
CNX
A
Vagus
17
Q
CNXI
A
Spinal accessory
18
Q
CNXII
A
Hypoglossal
19
Q
Olfactory exits through
A
cribriform plate
20
Q
Optic exits through
A
optic canal
21
Q
oculomotor exits through
A
superior orbital fissure
22
Q
trochlear exits through
A
superior orbital fissure
23
Q
ophthalmic exits through
A
superior orbital fissure
24
Q
abducens exits through
A
superior orbital fissure
25
which nerves exit through superior orbital fissure
oculomotor, trochlear, ophthalmic, abducens
26
maxillary exits through
foramen rotundum
27
mandibular exits through
foramen ovale
28
facial exits through
internal acoustic meatus
29
vestibulocochlear exits through
internal acoustic meatus
30
which nerves exit through internal acoustic meatus
facial, vestibulocochlear
31
glossopharyngeal exits through
jugular foramen
32
vagus exits through
jugular foramen
33
accessory exits through
jugular foramen
34
which nerves exit through the jugular foramen
glossopharyngeal, vagus, accessorry
35
hypoglossal exits through
hypoglossal canal
36
olfactory nerve function
special sense of smell
37
which nerves transmit parasympathetic information
III, VII, IX, X
38
optic nerve function
special sense of vision
39
oculomotor nerve function
motor to most extraocular muscles, parasympathetic to pupillary sphincter and ciliary eye muscles
40
trochlear nerve function
motor to superior oblique muscle of eye
41
abducens nerve function
motor to lateral rectus muscle of eye
42
vestibulocochlear nerve function
special sense of hearing and balance
43
glossopharyngeal nerve function
sensory to posterior 1/3 of tongue, palate, oropharynx (afferent gag reflex), motor to pharynx, special sense of taste from posterior 1/3 of tongue, parasympathetic to parotid gland
44
vagus nerve function
sensory to external ear, larynx, esophagus. Motor to pharynx, larynx, palate, esophagus (efferent gag reflex). Parasympathetic to thoracic and abdominal organs
45
spinal accessory nerve function
motor to sternocleidomastoid and trapezius
46
hypoglossal function
motor to tongue
47
which nerve is parasympathetic to pupillary response
oculomotor
48
which nerves are motor to eye movements
oculmotor, trochlear, abducens
49
which nerves are parasympathetic to salivary glands
facial, glossopharyngeal
50
which nerves are special sense of taste
facial (anterior 2/3), glossopharyngeal (posterior 1/3)
51
which nerves comprise gag reflex
glossopharyngeal (afferent), vagus (efferent)
52
which nerves are sensory to tongue
mandibular division of trigeminal (anterior 2/3) glossopharyngeal (posterior 1/3)
53
which nerves are involved in swallowing
glossopharyngeal, vagus
54
2 sensory branches of ophthalmic division
frontal nerve, branches to cornea and conjunctiva
55
course of frontal nerve
runs in superior aspect of orbit, gives off lacrimal nerve branch, exits orbit and becomes supraorbital nerve
56
supraorbital nerve innervates
sensory to part of the face
57
two sensory branches of maxillary division
infraorbital, superior alveolar
58
infraorbital nerve course
runs in inferior aspect of orbit, passes through infraorbital foramen
59
infraorbital nerve innervates
sensory to part of face
60
superior alveolar nerve innervates
sensory to upper teeth, some sinuses, nasal mucosa
61
four sensory branches of mandibular division
buccal, auricotemporal, lingual, inferior alveolar
62
inferior alveolar nerve becomes
mental nerve
63
buccal nerve innervates
sensory to inside of mouth and cheek
64
auricotemporal nerve innervates
sensory to skin around external ear, postganglionic parasympathetic to parotid gland
65
lingual nerve innervates
sensory to anterior 2/3 of tongue
66
inferior alveolar nerve innervates
sensory to lower teeth
67
course of inferior alveolar nerve
runs with mandible, exits mandible via mental foramen, becomes mental nerve
68
mental nerve innervates
sensory to region of lower lip and face
69
motor innervation of mandibular nerve
muscles of mastication
70
muscles of mastication include
temporalis, masseter, medial/lateral pterygoid
71
muscles of mastication are innervated by
mandibular division of trigeminal nerve
72
course of facial nerve
exits cranial cavity via internal acoustic meatus, descends through facial canal in petrous portion of temporal bone and gives off motor branch to stapedius, exits skull via stylomastoid foramen
73
stapedius muscle function
dampens the sound received by tympanic membrane
74
where does the facial nerve split into its 5 branches
after exiting the stylomastoid foramen as it runs posterior to the parotid gland
75
5 terminal branches of facial nerve
temporal, zygomatic, buccal, marginal mandibular, cervical
76
what do the 5 terminal branches of facial nerve do
innervate muscles of facial expression
77
5 terminal branches of facial nerve make up the
parotid plexus
78
temporal branch of facial nerve innervates
occipitofrontalis, orbicularis oculi
79
action of occipitiofrontalis
elevates eyebrows, wrinkles skin of forehead, draws scalp backwards
80
action of orbicularis oculi
closes eyelids
81
zygomatic branch of facial nerve innervates
orbicularis oculi
82
buccal branch of facial nerve innervates
orbicularis oris, buccinator, zygomaticus major
83
orbicularis oris action
compresses and protrudes lips
84
buccinator action
presses cheek against lips
85
zygomaticus major action
smiling
86
marginal mandibular branch of facial nerve innervates
mentalis
87
mentalis action
elevates and protrudes lower lip
88
cervical branch of facial nerve innervates
platysma
89
platysma action
depresses and wrinkles skin of lower face and mouth, tenses skin of neck
90
branch of facial nerve that provides for sense of taste from anterior 2/3 of tongue
chorda tympani
91
location of cell bodies of chorda tympani
facial ganglion
92
course of axons of chorda tympani
join lingual branch of V3 to reach tongue
93
Peripheral ganglia for parasympathetics in the head
ciliary, pterygopalatine, submandibular, otic
94
origin of sympathetics to head and neck
T1-T2
95
synapse point for sympathetics to head and neck
superior cervical ganglion
96
CNIII synapses at the (ps)
ciliary ganglion
97
CNVII synapses at the (ps)
pterygopalatine ganglion, submandibular ganglion
98
parasympathetics coming from ciliary ganglion innervate
pupillary constrictor, ciliary muscle
99
parasympathetics coming from pterygopalatine ganglion innervate
lacrimal gland
100
parasympathetics coming from submandibular ganglion innervate
submandibular and sublingual glands
101
parasympathetics coming from the otic ganglion innervate
parotid gland
102
sympathetics coming from the superior cervical ganglion innervate
pupillary dilator, skin of head and neck
103
autonomic functions of facial nerve
parasympathetic innervation of lacrimal gland, submandibular/sublingual salivary glands
104
how does facial nerve innervate lacrimal gland
within the proximal facial canal it gives off the greater petrosal nerve which synapses at the pterygopalatine ganglion. Postsynaptic fibers join lacrimal nerve to innervate lacrimal gland
105
how does facial nerve innervate submandibular and sublingual glands
the chorda tympani branch off and synapse at submandiublar ganglion and the postganglionic fibers innervate the two glands
106
autonomic functions of glossopharyngeal nerve
parasympathetics to parotid gland
107
glossopharyngeal nerve runs with what nerve to provide parasympathetic innervation to parotid gland
auriculotemporal nerve
108
autonomic functions of oculomotor nerve
pupillary constriction, ciliary muscle
