Cranial Nerves Flashcards
(94 cards)
1
Q
Name of CN 1
A
Olfactory
2
Q
Name of CN 2
A
Optic
3
Q
Name of CN 3
A
Oculomotor
4
Q
Name of CN 4
A
Trochlear
5
Q
Name of CN 5
A
Trigeminal
6
Q
Name of CN 6
A
Abducens
7
Q
Name of CN 7
A
Facial
8
Q
Name of CN 8
A
Vestibulocochlear
9
Q
Name of CN 9
A
Glossopharyngeal
10
Q
Name of CN 10
A
Vagus
11
Q
Name of CN 11
A
Spinal Accessory
12
Q
Name of CN 12
A
Hypoglossal
13
Q
Olfactory Brain Region
A
Cerebrum (Telencephalon, Forebrain)
14
Q
Optic Brain Region
A
Diencephalon (Forebrain)
15
Q
Oculomotor Brain Region
A
Mesencephalon (Midbrain)
16
Q
Trochlear Brain Region
A
Mesencephalon (Midbrain)
17
Q
Trigeminal Brain Region
A
Pons (Metencephalon, Hindbrain)
18
Q
Abducens Brain Region
A
Medulla (Metencephalon, Hindbrain)
19
Q
Facial Brain Region
A
Medulla (Metencephalon, Hindbrain)
20
Q
Vestibulocochlear Brain Region
A
Medulla (Metencephalon, Hindbrain)
21
Q
Glossopharyngeal Brain Region
A
Medulla (Metencephalon, Hindbrain)
22
Q
Vagus Brain Region
A
Medulla (Metencephalon, Hindbrain)
23
Q
Spinal Accessory Brain Region
A
Medulla (Metencephalon, Hindbrain)
24
Q
Hypoglossal Brain Region
A
Medulla (Metencephalon, Hindbrain)
25
Which spinal nerves are associated with the forebrain?
Olfactory (I) and Optic (II)
26
Which spinal nerves are associated with the midbrain?
Oculomotor (III) and Trochlear (IV)
27
Which spinal nerves are associated with the hindbrain?
CN V-XII
28
Olfactory (CN I) Function & Major fiber type
Smell
SVA (SENSORY)
29
Optic (CN II) Function & Major fiber type
Vision
SSA (SENSORY)
30
Oculomotor (CN III) Function & Major fiber type
Eye Movement (dorsal, medial, ventral - NOT LATERAL)
SE, VE (MOTOR)
31
Trochlear (CN IV) Function & Major Giber type/which muscle does it innervate?
Eye Movement
Dorsal Oblique Muscle: SE (MOTOR)
32
Trigeminal (CN V) Function & Major Fiber type
Masticatory Movements
SE
MOTOR
Sensation from face
GSA
SENSORY
33
Abducens (VI) Function & Major Fiber type/which muscle does it innervate?
Eye Movement
Lateral Rectus Muscle: SE
MOTOR
34
Facial (VII) Function & Major Fiber type
Facial Movement
SE, VE
MOTOR
Taste; rostral 2/3 tongue
SVA
SENSORY
35
Vestibulocochlear (VIII) Function & Major Fiber type
Hearing & Balance
SSA
SENSORY
36
Glossopharyngeal (IX)
Tongue & Pharynx
Taste sensations
SVA
SENSORY
parotid & zygomatic salivary glands
VE
MOTOR
Pharynx
GVA
Sensory
37
Vagus (X) functions and fiber type
Pharynx, Larynx, Heart, viscera
SE, VE, GVA....
abdominal and thoracic viscera
VE
MOTOR
MM of pharynx, larynx and esophagus
SE
MOTOR
38
Spinal Accessory (XI) Function and Fiber type
trapezius and three neck muscles - Neck movement
SE
MOTOR
39
hypoglossal (XII) Function and Fiber type
Tongue Muscles
SE
MOTOR
40
Which Cranial nerves have SVA fiber types?
Olfactory CN1
Facial CN7
Glossopharyngeal CN9
41
Which cranial nerves have SSA fiber types?
Optic CN2
| vestibulocochlear CN8
42
Which 8 cranial nerves have SE fiber type?
```
oculomotor CN3
Trochlear CN4
Trigeminal CN5
Abducens CN6
facial CN7
Vagus CN10
spinal accessory CN11
hypoglossal CN12
```
43
Which cranial nerves have VE fibers?
Oculomotor CN3
Facial CN7
Glossopharyngeal CN9
Vagus CN10
44
Which cranial nerves have GSA fibers?
Trigeminal CN5
45
Which cranial nerves have GVA fibers?
Glossopharyngeal CN9
| Vagus CN10
46
olfactory nerve clinical exam
Owners observations
47
Optic nerve clinical exam
Menace response
48
Oculomotor nerve physical exam
Horizontal eye movement
Pupillary light reflex
49
Trochlear nerve clinical exam
Extend head and look for dorsolateral strabismus
50
Trigeminal nerve clinical exam
Jaw movement and eye blink reflex
51
Abducens clinical exam
Lateral eye movement
52
facial nerve clinical exam
Facial movement
53
Vestibulocochlear clinical exam
Horizontal and vertical eye movement
54
Glossopharyngeal clinical exam
Pharyngeal gag reflexes
55
vagus clinical exam
Gag reflexes, blood pressure, heart rate
56
Spinal accessory clinical exam
Neck movement
57
Hypoglossal clinical exam
Tongue movement
58
Anosmia (loss of smell) occurs with injury to which cranial nerve?
Olfactory nerve I
59
Anopsia (loss of vision) occurs with injury to which cranial nerve?
Optic nerve II
60
Strabismus: eye deviated down and out (like looking out of the corner of eye) with large pupils occurs with injury to which cranial nerve?
Oculomotor nerve III
61
Cat: dorsal aspect of vertical pupil deviated laterally occurs with injury to which cranial nerve?
Trochlear nerve IV (often bilateral damage)
62
Bilateral damage = dropped jaw, asymmetric chewing, atrophy occurs with injury to which cranial nerve?
Trigeminal nerve V
63
Double vision; strabismus: eye deviated medially occurs with injury to which cranial nerve?
Abducens nerve VI
64
Facial paralysis and drooling occurs with damage to which cranial nerve?
facial nerve VII
65
Deafness, head tilt and nystagmus occur with injury to which cranial nerve?
vestibulocochlear nerve VIII
66
Choking and swallowing difficulty occur with damage to which cranial nerve?
Glossopharyngeal nerve IX
67
Hoarseness and inspiratory dyspnea occur with damage to which cranial nerve?
Vagus Nerve X
68
Weakened turning of neck occurs with injury to which cranial nerve?
Spinal Accessory XI
69
Deviation of tongue toward side of lesion occurs with injury to which cranial nerve?
Hypoglossal XII
70
Damage to the motor nucleus of the trigeminal nerve results in:
Paralysis of mastication mm. and associated muscle atrophy (bilateral damage results in dropped jaw).
Recovery 3-4 weeks
71
Damage to the facial nucleus results in:
Facial paralysis
Face droops, inability to blink on SIDE OF DAMAGE
Muzzle pulls toward one side (pulls AWAY from the side of damage)
*OFTEN INVOLVED IN BRAINSTEM DAMAGE*
72
Damage to the Nucleus Ambiguus (CN 9 and CN 10) results in:
Swallowing and vocalization difficulties
Bilateral damage = vocalization difficulties
73
Damage to the parasympathetic nucleus of III
loss of pupillary constrictor muscle in response to light on the SIDE OF THE LESION
BOTH EYES SHOULD CONSTRICT IF YOU SHINE LIGHT IN ONE
74
Damage to the parasympathetic nucleus of X results in:
Accelerated heart rate, increased blood pressure and disturbances of GI activity
75
Taste is associated with CN ......
7, 9 and 10
76
Oculomotor Nucleus Function
SE - Innervates eye muscles that shift gaze dorsal, medial, ventral
77
Trochlear Nucleus Location & Function
Innervates muscles of the tongue and eye
Located ventral to periaqueductal grey matter in the caudal midbrain
78
Motor nucleus of the trigeminal nerve Function
GSA
Innervates muscles of mastication
79
Pontine Nucleus of the Trigeminal Nerve Function
GSA
Touch and Pressure sensation from the face or oral cavity
80
Nucleus of the spinal tract of V Location & Function
Located in the medulla
Pain & Temperature sensation from the face and oral cavity
81
Damage to the nucleus of the spinal tract of V
Loss of pain/temperature sensation from HALF THE FACE
82
Damage to the pontine nucleus of the trigeminal nerve
Damage results in loss of touch and pressure sensation from the face
83
Damage to the mesencepahlic (motor) nucleus of the trigeminal nerve
Mastication issues yo
Muscle atrophy & bilteral damage results in dropped jaw
84
Abducent Nucleus Damage results in
Medial strabismus
85
Motor nucleus of the Facial Nerve
Muscles of facial expression
Results in facial paralysis, often involved in brainstem damage, muzzle pulls toward one side (AWAY FROM THE SIDE OF DAMAGE)
Droops on the side of damage, nose points towards opposite side
86
Nucleus of the Solitary Tract (associated with which nerve?)
GVA (CN 9 and 10) & portion is SVA
Visceral sensation from the pharynx, larynx and portions of the esophagus
Taste from tongue and pharynx
87
Parasympathetic Nucleus of the Vagus N.
VE
Innervates cervical, thoracic and abdominal viscera
Damage results in:
GI Disturbances
Accelerated heart rate
Increased blood pressure
88
Parasympathetic Nucleus of the Oculomotor N.
VE
Damage results in loss of pupillary constriction in response to light in the eye on the side of the lesion
89
Nucleus Ambiguus
Innervates mm of the soft palate, larynx and pharynx
Damage results in:
Swallowing diff.
Vocalization diff.
and Regurgitation
TEST GAG REFLEX
90
SSA Nuclei - Special Somatic Afferent
Cranial nerve VIII - hearing & Balance
Optic Nerve (2) - Vision
91
SVA Nuclei - Special Visceral Afferent
Taste - CN VII, IX and X
| Smell - Olfactory nerve (1)
92
GVA Nucleus
Nucleus of the solitary tract - CN IX and X
93
VE Nuclei - Visceral Efferent
Parasympathetic nuclei of III and X
94
SE Nuclei - Somatic Efferent
CN 3-7
CN 9-12
