Cranial Nerves Flashcards
(120 cards)
1
Q
name CNI
A
olfactory
2
Q
name CNII
A
optic
3
Q
name CNIII
A
oculomotor
4
Q
name CNIV
A
trochlea
5
Q
name CNV
A
trigeminal
6
Q
name CNV1
A
ophthalmic branch of trigeminal
7
Q
name CNV2
A
maxillary branch of trigeminal
8
Q
name CNV3
A
mandibular branch of trigeminal
9
Q
name CNVI
A
abducens
10
Q
name CNVII
A
facial
11
Q
name CNVIII
A
vestibulocochlear
12
Q
name CNIX
A
glossopharyngeal
13
Q
name CNX
A
vagus
14
Q
name CNXI
A
spinal accessory
15
Q
name CNXII
A
hypoglossal
16
Q
where does CNI leave the base of the skull
A
cribriform plate of ethmoid
17
Q
where does CNII leave the base of the skull
A
optic canal on lesser wing of sphenoid
18
Q
where does CNIII leave the base of the skull
A
superior orbital fissure on greater wing of sphenoid
19
Q
where does CNIV leave the base of the skull
A
superior orbital fissure on greater wing of sphenoid
20
Q
where does CNV1 leave the base of the skull
A
superior orbital fissure on greater wing of sphenoid
21
Q
where does CNV2 leave the base of the skull
A
foramen rotundum on sphenoid
22
Q
where does CNV3 leave the base of the skull
A
foramen ovale on sphenoid
23
Q
where does CNVI leave the base of the skull
A
superior orbital fissure on greater wing of sphenoid
24
Q
where does CNVII leave the base of the skull
A
from internal acoustic meatus through petrous temporal bone to stylomastoid foramen
25
where does CNVIII leave the base of the skull
internal acoustic meatus in petrous temporal bone
26
where does CNIX leave the base of the skull
jugular foramen
27
where does CNX leave the base of the skull
jugular foramen
28
where does CNXI leave the base of the skull
jugular foramen
29
where does CNXII leave the base of the skull
hypoglossal canal
30
where is the jugular foramen
between petrous temporal bone and occipital bone
31
which bone is the hypoglossal canal part of
occipital bone
32
what structures pass through the jugular foramen
CNIX, CNX, CNXI, internal jugular vein
33
through which cranial fossa does CNI leave the skull
anterior cranial fossa
34
through which cranial fossa does CNII leave the skull
middle cranial fossa
35
through which cranial fossa does CNIII leave the skull
middle cranial fossa
36
through which cranial fossa does CNIV leave the skull
middle cranial fossa
37
through which cranial fossa does CNV1 leave the skull
middle cranial fossa
38
through which cranial fossa does CNV2 leave the skull
middle cranial fossa
39
through which cranial fossa does CNV3 leave the skull
middle cranial fossa
40
through which cranial fossa does CNVI leave the skull
middle cranial fossa
41
through which cranial fossa does CNVII leave the skull
posterior cranial fossa
42
through which cranial fossa does CNVIII leave the skull
posterior cranial fossa
43
through which cranial fossa does CNIX leave the skull
posterior cranial fossa
44
through which cranial fossa does CNX leave the skull
posterior cranial fossa
45
through which cranial fossa does CNXI leave the skull
posterior cranial fossa
46
through which cranial fossa does CNXII leave the skull
posterior cranial fossa
47
what are the axon modalities of CNI
special sensory and sensory
48
what are the axon modalities of CNII
special sensory
49
what are the axon modalities of CNIII
motor
50
what are the axon modalities of CNIV
motor
51
what are the axon modalities of CNV1
sensory
52
what are the axon modalities of CNV2
sensory, parasympathetic
53
what are the axon modalities of CNV3
sensory, motor
54
what are the axon modalities of CNVI
motor
55
what are the axon modalities of CNVII
special sensory, sensory, parasympathetic, motor
56
what are the axon modalities of CNVIII
special sensory
57
what are the axon modalities of CNIX
sensory, motor, parasympathetic
58
what are the axon modalities of CNX
sensory, motor, parasympathetic, special sensory
59
what are the axon modalities of CNXI
motor
60
what are the axon modalities of CNXII
motor
61
what is innervated by CNI
olfactory mucosa receptor cells on roof of nasal cavity
62
what is innervated by CNII
eye for vision
63
what is innervated by CNIII
extraocular muscles except lateral rectus and superior oblique
and
parasympathetics of ciliary ganglion
64
what is innervated by CNIV
superior oblique extraocular muscle
65
what is innervated by CNV1
sensory of forehead, upper eyelid, cornea, conjunctiva, bridge/apex of nose, sinuses except maxillary, anterior and posterior cranial fossae
66
what is innervated by CNV2
sensory of nasal cavities, ala of nose, middle of face (lower eyelid to upper lip), and maxillary sinuses
67
what is innervated by CNV3
motor: muscles of mastication (masseter, temporalis, medial pterygoid, lateral pterygoid) + TMJ
sensory: chin / side of face, sensory anterior 2/3 tongue, sensory to teeth, sensory to parotid, maxillary sinus, floor for nasal cavity, middle cranial fossa, buccal mucosa
68
what is innervated by CNVI
lateral rectus extraocular muscle
69
what is innervated by CNVII
```
muscles of facial expression
taste of anterior 2/3 tongue
parasympathetic to sublingual and submandibular salivary glands, lacrimal gland, parasympa to sinuses
motor stapedius muscle
efferent corneal reflex
sensory to helix/concha of ear, and...
```
70
what is innervated by CNVIII
internal ear for hearing and balance
71
what is innervated by CNIX
motor to stylopharyngeus
sensation nasopharynx, oropharynx, eustachian tube, middle ear cavity, palatine tonsil
visceral afferent to carotid sinus
parasympathetic to parotid salivary gland
taste and sensation of poster 1/3 tongue (vallate papillae)
72
what is innervated by CNX
sensory from inferior phaynx/larynx/thoracic/abdo organs, motor to soft palate/palatoglossus, parasympathetic to thoracic/abdo organs, special sensory taste to epiglottis
73
what is innervated by CNXI
sternocleidomastoid and trapezius motor
74
what is innervated by CNXII
motor to styloglossus, hyoglossus, and genioglossus and intrinsci muscles of the tongue
75
which of the cranial nerves are parasympathetic
III, VII, IX, X
76
what nerves form the chorda tympani
CN7, CNV3
77
what is the function of the chorda tympani
anterior 2/3 tongue taste
78
where does CNI attach to the CNS
olfactory tract
79
where does CNII attach to the CNS
diencephalon
80
where does CNIII attach to the CNS
midbrain mesencephalon
81
where does CNIV attach to the CNS
midbrain mesencephalon
82
where does CNV attach to the CNS
pons (between midbrain and medulla)
83
where does CNVI attach to the CNS
pontomedullary junction
84
where does CNVII attach to the CNS
pontomedullary junction
85
where does CNVIII attach to the CNS
pontomedullary junction
86
where does CNIX attach to the CNS
medulla
87
where does CNX attach to the CNS
medulla
88
where does CNXI attach to the CNS
cervical spinal cord
89
where does CNXII attach to the CNS
via rootlets lateral to pyramids of medulla
90
insert extracranial path of vagus
```
runs within carotid sheath
right CNX on lateral aspect of trachea
left CNX on lateral aspect of aortic arch
left arch of aorta
right under right subclavian artery
then becomes recurrent laryngeal nerve to supply larynx
through diaphragm with oesophagus
pass onto surface of stomach
then branches
```
91
what direction to CNXII travel in intracranially
anteriorly
92
what is the extracranial path of CNXII
descends lateral to carotid sheath, at hyoid level moves anteriorly to lateral tongue. is lateral to the loop of the lingual artery
93
name a branch of CNV3
auricotemporal branch
94
how do you clinically test CN I
Ask patient to smell a familiar smell while covering the contralateral nostril
95
how do you clinically test CN II
```
Snellen
Ishihara plates
Visual fields
Pupillary light reflex
Fundoscopy
```
96
how do you clinically test CN III
H test
97
how do you clinically test CN IV
H test
98
how do you clinically test CN V1
sensation on forehead, upper eyelid and tip of nose
99
how do you clinically test CN V2
sensation of mid-cheek, lower eyelid, upper lip and nostril
100
how do you clinically test CN V3
sensory: sensation of mid cheek, lower lip and chin
motor: palpate while clenching teeth, open jaw against resistance
101
how do you clinically test CN VI
H test
102
how do you clinically test CN VII
raise eyebrows
close eyes tightly
smile
puff out cheeks and hold air
103
how do you clinically test CN VIII
Rinnie and Weber tests
104
how do you clinically test CN IX
test sensory by eliciting gag reflex
105
how do you clinically test CN X
say 'ahhhh', in unilateral damage uvula goes away from damaged side
speech for hoarseness testing laryngeal muscles
swallow sip of water for splutter testing pharyngeal muscles
106
how do you clinically test CN XI
Shrug shoulders
| Turn head to flex neck and turn towards the opposite side
107
how do you clinically test CN XII
Stick out tongue
| If damage points towards side of damage
108
where does the olfactory nerve synapse
olfactory bulb
109
where is the intracranial path of the optic tract
around the pituitary stalk
110
where is the intracranial path of CN III
lateral wall of the cavernous sinus
111
where is the intracranial path of CN IV
lateral wall of cavernous sinuses
112
where is the intracranial path of CN V
Inferior to the edge of the tentorium cerebelli between the posterior and middle cranial fossae
113
where is the intracranial path of CN VI
within cavernous sinus
114
where is the intracranial path of CN VII
directly into internal acoustic meatus
115
where is the intracranial path of CN VIII
posteromedially from the internal acoustic meatus to the pontomedullary junction
116
where is the intracranial path of CN IX
directly towards jugular foramen
117
where is the intracranial path of CN X
directly towards jugular foramen
118
where is the extracranial path of CN XI
on surface of SCM
119
where is the extracranial path of CN XII
Descends lateral to carotid sheath.
| At the level of the hyoid turns anteriorly towards lateral aspect of tongue
120
where is the extracranial path of CN XII
Descends lateral to carotid sheath.
| At the level of the hyoid turns anteriorly towards lateral aspect of tongue
