Lecture 5- CN and Neuroforamina Flashcards
1
Q
Which CNs course through the internal acoustic meatus?
A
VII and VIII
2
Q
Which CN belongs to the CNS?
A
Optic N. (II)
3
Q
12 pairs of CNs
Attachments:
1 at the telencephalon: ________
1 at the diencephalon: ________
9 at the brainstem: _________
1 at the spinal cord: _________
A
CN I- olfactory n.
CN II- optic n.
CN III- X, XII
CN XI- spinal accesory
4
Q
Which CNs attach to the middle brain?
Which neuroforamina do they course through?
A
CN III and IV
superior orbital fissure and is formed by the sphenoid bone
5
Q
Which CNs course through the superior orbital fissure?
A
III
IV
VI
V- division 1 (ophthalmic)
6
Q
Which CN course through the foramen ovale?
A
V- division 3 (mandibular)
7
Q
Which CNs course through the jugular foramen?
A
IX, X, XI
8
Q
What structure goes through the foramen magnum?
A
Medulla Oblongata- to form the spinal cord
9
Q
Which CNs have all 4 functional components?
A
VII, IX, X
10
Q
CN II courses through what structure?
A
Optic canal
11
Q
Which CN courses through the foramen rotundum?
A
V- division 2 (maxillary)
12
Q
CN I courses through what structure?
A
Cribriform Plate
13
Q
What artery courses through the foramen spinosum?
A
Middle Meningeal Artery
14
Q
The carotid canal is for which artery to run through?
A
Internal carotid artery
15
Q
CN XII courses through what structure?
A
hypoglossal canal
16
Q
What are these structures?
A
- Optic Canal
- Superior Orbital Fissure
- Foramen Rotundum
- Foramen ovale
- Internal Acoustic Meatus
- Jugular Foramen
- Foramen Magnum
- Hypoglossal Canal
- Carotid Canal
- Foramen Spinosum
- Cribriform plate
17
Q
Which CN is the only one that attaches at the posterior or dorsal midbrain?
A
CN IV
18
Q
CNs III and IV are located at the _______ ________ level
A
superior colliculus
19
Q
Which CNs are located at the Medulla?
A
IX, X, XII
20
Q
Which two CNs are located at the posterior olive?
A
IX, X
21
Q
CN ____ is between the olive and pyramid
A
X
22
Q
Which CN does not affect/compromise the spinal cord?
A
CN II
23
Q
Development of the Central Canal and 4th Ventricle
Spinal cord:
1.
2.
3.
A
Ventral Motor
Sulcus Limitans
Dorsal Sensory
24
Q
Development of the Central Canal and 4th Ventricle
Brainstem
1.
2.
3.
A
Medial Motor
Sulcus Limitans
Lateral sensory
25
Label this
26
Which brainstem region is shown here? Which structures are indicated by the ABCs? What view?
A.
B.
C.
Which CN can you see?
A. cerebral peduncle
B. Substantia Nigra
C. Red Nucleus
CN II @ the superior colliculus level
27
CN Nuclei in the brainstem
Medial: ________
Lateral: _______
Motor
Sensory
28
What do these mean?
Sp- special sensation
Ss- somatic sensory
Vs- visceral sensory
Sm- somatic motor
P: branchial motor
Vm: visceral motor
29
Location
CN V nuclei is at the _______ to _______
The MESENCEPHALIC nucleus is a ____________
midbrain; C2
ganglion
30
Which CNs don't have their own nuclei, so they "feed off" of CN V?
VII, IX, X
31
CN I: __________ nerve is located in the __________
Olfactory
telencephalon
32
Which CNS condition can compromise vision and cause a decrease of the myelin sheath?
M. S.
33
Label this
34
Which CN specifically involves lens complexity and activity in the iris?
CN III- oculomotor n.
35
What are the 4 + 1 mm> involving the oculomotor nerve?
1. Levator Palpebrae Superioris
2. Sup/Inf Rectus
3. Sup/Inf Oblique
36
Main functions of the trigeminal nerve are
1.
2.
3.
Smell
Chewing
Taste
37
There are ____ CNs that are parsympathetic
4
38
The main function of CN IX is ______ and ______
swallow
taste
39
Cogenital Torticollis is associated with what nerve and main muscle?
The baby will have symptoms/issues with what two actions?
CN XI
SCM
ipsilateral SB and contralateral ROT
40
Which CN is the only one that descends into the cavity and involves our organs?
CN X: Vagus N.
41
What are the two salivary glands?
Submandibular
Sublingual
42
The 2 main functions of the facial nerve are what?
facial expression
and taste
43
Shared Locations
CN IX/X: ___________ nucleus ( ______ )
ambiguous
Sm
44
Shared Locations
One nuclei, 2 components
Ambiguous nuclei: ______ and ______ for CN X
Vm, Sm
45
CN I
Olfactory bulb: _____
Olfactory nerves: _______
Courses through the _______ _______and shapes the _______ bone
( ______ ) and function is ________/________
CNS
PNS
cribriform plate
ethmoid
Vs: olfaction, smell
46
CN II: ________ nerve is located in the __________
Courses through the _______ _______ and shapes the ______ bone
( __ ) and function is __________
Optic
diencephalon
optic canal
sphenoid bone
Vs: vision
47
CN III: ________ nerve is located in the _________ and at the ________ ________level
Courses through the ________ __________ __________ and shapes the _______ bone
Oculomotor
midbrain
superior colliculus
superior orbital fissure
sphenoid
48
CN III has two functional components:
( ___ )- 4 + 1 mm. _______ motions
( ___ )- ________ ganglion, ________ ocular mm.
Sm: eyeball
Vm: ciliary; intrinsic
49
CN IV: ________ nerve
Courses through the _______ _______ _______ and shapes the _____ bone
( ____ ): ________ ________ muscle
Trochlear
Superior Orbital fissure
sphenoid
Sm: Superior Oblique
50
CN V: _________ nerve
is located on the ___-_____ ______
and shapes the _____ bone
Trigeminal
mid- lateral
sphenoid
51
Trigeminal Nerve
V1- _________ and goes through the ______ _______ _______
( ____ )
V2- _________, and goes through the _______ ______
( ____ )
V3: ________ and goes through the _______ _______
( ____ ): smell, flavor
somatosensory, cutaneous
( ___ ): mastication, sound intensity, swallowing
Ophthalmic- superior orbital fissure, Ss
Maxillary- foramen rotundum, Ss
Mandibular- foramen ovale
Ss
Sm
52
CN VI: _________. nerve
Located on the _______ __________ __________
Courses through the ______ _____ ______ and shapes the _______ bone
( ____ ): Which muscle and does what?
Abducens
Medial Pontomedullary Junction
superior orbital fissure, sphenoid
Sm: lateral rectus and moves the eye away from the nose
53
Which two CNs only supply one muscle?
CN IV and VI
54
CN X: ________ nerve
Located on the _______ and is posterior to the _______
Courses through the ______ _______ and is associated with the ______ and ________ bones
Vagus
medulla, olive
jugular foramen, temporal, occipital
55
CN VII: _______ nerve
Located on the ________ _________ __________
Courses through the _______ _______ ______ and shapes the ______ bone
Facial
Lateral pontomedullary junction
Internal Acoustic Meatus
temporal
56
Shared Locations
CN VII/IX/X: CN V nucleus is _________ _______
__________ nucleus ( ____ )
Somatic Sensory
solitary; Vs
57
CN XII clinical issue:
If there is a problem with protruding the tongue out, the _________ mm. is compromised and will shift to the _______ side
genioglossus
weaker
58
CN XII clinical issue:
Stroke patients would present with the tongue shifting to the ________ side of where the stroke occurred
Ex. R sided stroke = tongue shifted to the _____ side
opposite
Left
59
CN VIII: _____________ nerve
Located on the _______ ________ _______
Courses through the _______ _______ _____ and shapes the ______ bone
Vestibulocochlear
Lateral pontomedullary junction
Internal Acoustic Meatus
temporal
60
Facial Nerve (all 4 functional components)
Sensory
Ss- _______ _______
Vs- Anterior ______ of the _____ for taste
Motor
Sm- facial ________, _______ _______ control
Vm- _____________ ganglion: _______ gland, ______ glands
__________ ganglion: ______ glands
External Ear
2/3, tongue
expression, sound intensity
pterygopalantine, lacrimal, mucosal
Submandibular, salivary
61
Vestibulocochlear Nerve
Functional components ( ___ )
__________: vestibular division
_________: cochlear division
Vs
Propioception
Hearing
62
CN IX: __________ nerve
Is located on the ______ and is posterior to the _______
Courses through the _______ _________ and is associated with the ______ and ________ bones
Glossopharyngeal
medulla
olive
jugular foramen
temporal; occipital
63
Glossopharyngeal Nerve
All 4 Functional Components:
Sensory
Ss: _____ cavity, and posterior ____ of _______
Vs: posterior ______ of ______ for taste
Motor
Sm: ____________
Vm: _______ ganglion, _______ gland
tympanic, 1/3, tongue
1/3, tongue
stylopharyngeus
otic, parotid
64
Vagus Nerve- all 4 components
Sensory
Ss: _______ _______, ________/________
Vs: ________ for taste, ________ _______ until hindgut
* _______glossus
* _______glossus
Motor
Sm: ________, ________/_________/___________
Vm: _________ ________ until hindgut
external ear, pharynx/llarynx
epligottis, internal organs,
palato, stylo
tongue, pharynx, larynx, esophagus
internal organs
65
CN XI: ________ ________ nerve
Located at the ______ ________ _______ _________
Associated with the ______ and _______ bones
Sm: Which two muscles?
Spinal Accessory
lateral cervical spinal cord
temporal and occipital
trapezius, SCM
66
CN XII: _________ nerve
located on the ______ between the ______ and olive
Courses through the _______ ______ and is associated with the _________ bone
( ____): tongue functions
Hypoglossal
medulla
pyramid
hypoglossal canal
occipital
Sm
67
Which cranial nerve courses through the foramen?
Which functional component?
Foramen ovale: CN V division 3
Ss: mandible to temporal
Sm: mastication, swallowing, sound intensity, depression of mandible
68
Which functional components are in CN II, CN III, CN V, and CN VII?
CN II- ______
CN III- _________
CN V- ____________
CN VII- __________
Vs
Sm/Vm
Sm/Ss
Sm/Ss/Vm/vS
