Cranial Nerves Flashcards
1
Q
CN-I
A
Olfactory
2
Q
CN-2
A
Optic
3
Q
CN-III
A
Oculomotor
4
Q
CN-IV
A
Trochlear
5
Q
CN-V(1)
A
Trigeminal
Ophthalmic
6
Q
CN-V(2)
A
Trigeminal
Maxillary
7
Q
CN-V(3)
A
Mandibular
8
Q
CN-VI
A
Abducens
9
Q
CN-VII
A
Facial
10
Q
CN-VIII
A
Vestibulocochlear
11
Q
CN-IX
A
Glossopharyngeal
12
Q
CN-X
A
Vagus
13
Q
CN-XI
A
Accessory
14
Q
CN-XII
A
Hypogossal
15
Q
CN’s out of Cerebrum
A
Olfactory
Optic
16
Q
CN’s out of Midbrain
A
Oculomotor
Trochlear
17
Q
CN’s out of Pons
A
Trigeminal
Abducens
Facial
Vestibulocochlear
18
Q
CN’s out of Medulla
A
Glossopharyngeal
Vagus
Hypoglossal
19
Q
CN’s out of Spinal Cord
A
Accessory
20
Q
CN’s with all three functions
A
Facial (7)
Glossopharyngeal (9)
Vagus (10)
21
Q
CN’s with two functions
A
Oculomotor (3) M&P
Trigeminal (5) S&M
22
Q
CN’s with Only Sensory Function
A
Olfactory (1)
Optic (2)
Vestibulocochlear (8)
23
Q
CN’s with only Motor Function
A
Trochlear (4)
Abducens (6)
Hypoglossal (12)
Accessory (11)
24
Q
CN-I: CNS Contribution
A
Cerebrum
25
CN-I: Axon Function
Sensory - Smell
26
CN-I: Nuclei
Primary above Cribiform
Secondary in Olfactory Bulb
27
CN-I: Skull Exit
Cribiform Foramina (of Ethmoid Bone)
28
CN-I: Target Structures
Mucosa of Nasal Cavity
29
CN-II: CNS Contribution
Cerebrum
30
CN-II: Axon Function
Sensory - Vision
31
CN-II: Skull Exit
Optic Canal
32
CN-II: Target Structures
Retina
33
CN-II: Deficit when lesion at optic canal
R/L Monocular Blindness
34
CN-II: Deficit when lesion at Optic Chiasm
Bitemporal Hemianopsia
35
CN-II: Deficit when lesion at Optic Tract
R/L homonymous hemiopsia
(Contralateral field of vision affected to lesion)
36
CN-III: CNS Contribution
Mid Brain
37
CN-III: Axon Function
Motor (Voluntary)
Parasympathetic (Involuntary)
38
CN-III: Nuclei
Motor: Oculomotor Nucleus
Parasympathetic: Edinger-Westphal Nucleus
39
CN-III: Skull Exit
Superior Orbital Fissure
40
CN-III: Target Structures - Motor
Superior Ramus: Levator Palpebrae Superioris, Superior Rectus
Inferior Ramus: Medial Rectus, Inferior Rectus, Inferior Oblique
41
CN-III: Target Structures - Parasympathetic
Ciliary Body
Constrictors of Iris
42
CN-III: Ganglia
Ciliary Ganglion via CN-V(1), Short Ciliary
43
CN-IV: CNS Contribution
Posterior Contralateral Mid Brain
44
CN-IV: Axon Function
Motor
45
CN-IV: Nuclei
Trochlear Nucleus
46
CN-IV: Skull Exit
Superior Orbital Fissure
47
CN-IV: Target Structure
Superior Oblique
48
CN-V(1): CNS Contribution
Pons
49
CN-V(1): Axon Function
Sensory
50
CN-V(1): Nuclei
Originates in Trigeminal Ganglion
51
CN-V(1): Skull Exit
Superior Orbital Fissure
52
CN-V(1): Target Structures - Nasociliary
-Skin over Nose (ant. ethm.) & Bridge of Nose (infra troch)
-Frontal (ant. ethm.), Sphenoid (post. ethm.) & Ethmoid (both ethmoids) Sinus
-Superior Nasal Cavity (both ethmoids)
-Eye (short & long ciliary)
53
CN-V(1): Target Structures - Frontal
Skin over medial aspect of forehead (supratrochlear) & forehead (supraorbital)
54
CN-V(1): Target Structure - Lacrimal
Lacrimal Gland
Skin overlying lateral aspect of upper eye lid
55
CN-V(1): Ganglia
Ciliary Ganglion is on Short Ciliary N to get to CN-III
56
CN-V(2): CNS Contribution
Pons
57
CN-V(2): Axon Function
Sensory
58
CN-V(2): Nuclei
Origination from Trigeminal Gaglion
59
CN-V(2): Exits Skull
Foramen Rotundum
60
CN-V(2): Ganglion
Pterygopalatine Ganglion
Pre-Ganglion from CN-VII
61
CN-V(2): Target Structures (Post-Ganglionic Parasympathetic & Sensory)
-Lacrimal Gland (Communicating Branch)
-Pharyngeal
-Lesser Palatine
-Greater Palatine
-Post. Sup. Lat. Nasal
-Post. Sup. Med. Nasal
-Nasopalatine
62
CN-V(2): Target Structures (Sensory Only)
-Post. Superior Alveolar: Upper Molars, Maxillary Sinuses
-Infraorbital: Mucosa & Skin of Upper Lip, Lateral Nose, Lower Eyelid
-Zygomatic: Skin overlying Zygomatic Arch
63
CN-V(3): CNS Contribution
Pons
64
CN-V(3): Axon Functions
Branchial Motor (1st Arch)
Sensory
65
CN-V(3): Nuclei
Motor = Trigeminal Motor Nucleus in Pons
Sensory = Originates in Trigeminal Ganglion
66
CN-V(3): Skull Exit
Foramen Ovale
67
CN-V(3): Ganglion
1) Otic Ganglia on Auriculotemporal n., pre- CN-IX
2) Submandibular Ganglion on lingual n., pre- CN-VII
68
CN-V(3): Target Structures (Ganglion)
1) Otic = Parotid Gland
2) Submandibular = Anterior 2/3 of Tongue
69
CN-V(3): Target Structures (Motor & Sensory)
- Muscles of Mastication (Temporalis, Masseter, Lat. Pterygoid, Med. Pterygoid)
- Nerve to Mylohyoid (Mylohyoid & Ant. Digastric)
70
CN-V(3): Target Structures (Sensory Only)
-Meningeal = Cranial Dura Matter
-Buccal = Buccal Skin & Oral Mucosa
-Lingual = Ant. 2/3 of Tongue
-Inf. Aveolar/Mental = Lower Teeth, Inf. Buccal Gingiva, Skin over Chin & Lower Lip
-Auriculotemporal = TMJ, Ext. Auditory Meatus, Skin to Ant. Ear
71
CN-VI: CNS Contribution
Pons
72
CN-VI: Axon Function
Motor
73
CN-VI: Nuclei
Abducens Nuclei
74
CN-VI: Skull Exit
Superior Orbital Fissure
75
CN-VI: Target Structure
Lateral Rectus Muscle
76
CN-VII: CNS Contribution
Pons
77
CN-VII: Axon Functions
Sensory
Sensory - Taste
Parasympathetic
Branchial Motor (2nd Arch)
78
CN-VII: Nuclei
Sensory & Sensory - Taste = Geniculate Ganglion
Parasympathetic = Superior Salvitory Nucleus in Pons
Branchial Motor = Facial Motor Nucleus in Pons
79
CN-VII: Skull Exit
Internal Auditory Meatus
80
CN-VII: Target Structures (Motor)
Stampedius
Posterior Digastric
Stylohyoid
Temporalis
Zygomatic
Buccal
Mandibular
Clavicular
81
CN-VII: Target Structure (Sensory)
Skin of Ear
82
CN-VII: Target Structure (Sensory - Taste)
-Anterior 2/3 of tongue
-Palate
83
CN-VII: Target Structure (Parasympathetic)
Submandibular Gland
Sublingual Gland
Lacrimal Gland
- Mucosa of Nasal Cavity
- Paranasal Sinuses
- Nasopharynx
- Roof of the Oral Cavity
84
CN-VII: Ganglion
Pterygopalentine Ganglion - Hitching a ride on CN-V2
Submandibular Ganglion - Hitching a ride on Lingual br CN-V3
85
CN-IX: CNS Contribution
Medulla
86
CN-IX: Axons
Motor (3rd Arch)
Parasympathetic
Sensory - Touch/Proprioception
Sensory - Taste
Sensory - Visceral
87
CN-IX: Nuclei
Motor: Nuclei Ambiguus
Parasympathetic: Inferior Salvitory Nucleus
Sensory: Originate in Superior/Inferior Ganglions
88
CN-IX: Skull Exit
Jugular Foramen
89
CN-IX: Target Structures (Motor)
Sylopharyngeal Muscle
90
CN-IX: Target Structures (Parasympathetic)
Otic Ganglion (Parotid Gland)
91
CN-IX: Target Structures (Sensory - Taste)
Posterior 1/3 of Tongue
92
CN-IX: Target Structures (Sensory - Visceral)
Carotid Body
Carotid Sinus
93
CN-IX: Target Structures (Sensory)
Stylopharyngeal Muscle
Mucosa of Upper Pharynx (gag reflex)
Tonsillar Mucosa
Mucosa of Posterior 1/3 of Tongue
Middle Ear
94
CN-IX: Ganglion
Otic Ganglion - Hitches a ride on CN-V3 (auriculotemporal n.) and acts on Parotid Gland “Spit”
95
CN-X: CNS
Medulla
96
CN-X: Axons
Motor (4th & 6th Arch)
Parasympathetic
Sensory - Touch/Proprioception
Sensory - Taste
Sensory - Visceral
97
CN-X: Nuclei
Motor: Nucleus Ambiguus
Parasympathetic: Dorsal Motor Nucleus
Sensor: Originate in Superior and Inferior Ganglion
98
CN-X: Skull Exit
Jugular Foramen
99
CN-X: Bundles of Axons (4 + 2)
Pharyngeal
Superior Laryngeal (Int & Ext)
Recurrent Laryngeal
Vegal Trunk
Thoracic Cardiac
Aruicular
100
CN-X: Target Structures (Pharyngeal)
Motor & Sensory: Muscles of Pharynx & Palate
Parasympathetic: Palate & Pharynx Mucosa
101
CN-X: Target Structures (Int. Laryngeal)
Sensory: Mucosa of Oral & Laryngeal Pharynx, & Larynx
Sensory & Taste: Epiglottis
Parasympathetic: Vocal Cords & Epiglottis Mucus
102
CN-X: Target Structures (External Laryngeal)
Proprioception & Motor: Cricothyroid & Inferior Constrictor Muscles
103
CN-X: Target Structures (Recurrent Laryngeal)
Motor & Proprioception: Muscles of Larynx
Proprioception: Mucosas of Trachea & Larynx
Parasympathetic: Vocal Cord & Trachea Mucosa
104
CN-X: Target Structures (Vagal Trunk)
Visceral Sensory & Parasympathetic: Thorax and Abdomen
105
CN-X: Target Structures (Single Sensory Axons)
Aortic Arch
Skin to External Auditory Meatus & Ear
106
CN-XI: CNS Contributor
Spinal Cord (C1-C5)
107
CN-XI: Axons
Motor
108
CN-XI: Skull Exits
Jugular Foramen
(First Enters through Foramen Magnum)
109
CN-XI: Target Structures
SCM
Trapezius
110
CN-XII: CNS Contributor
Medulla
111
CN-XII: Axons
Motor
112
CN-XII: Nuclei
Hypoglossal Nucleus
113
CN-XII: Skull Exit
Hypoglossal Canal
114
CN-XII: Target Structures
Extrinsic Tongue Muscles: Genioglossus, Hypoglossal, Syloglossus
Intrinsic Tongue Muscles
115
Sympathetic Innervation: Exit Skull
CN-
-Facial (VII)
-Glossopharyngeal (XI)
-Vagus (X)
-Accessory (XI)
-Hypoglossal (XII)
116
Sympathetic Innervation: Calvernous Sinus (Via Internal Carotid)
CN-
-Oculomotor (III)
-Trochlear (IV)
-Abducens (VI)
-Trigeminal (V1 & V2)
117
Sympathetic Innervation: Internal Carotid n., via Internal Carotid Artery (not Calvernous Sinus)
Deep Petrosal n (CN-V2 branch)
Middle Ear (Tympanic Plexus)
118
Sympathetic Innervation: External Carotid Artery
Communicating With CN-
-V2 (Trigeminal, Maxillary)
-V3 (Trigeminal, Mandibular)
-VII (Facial)
-IX (Glossopharyngeal)
-X (Vagus)
-XII (Hypoglossal)
119
What are the three nerve bundles in CN-VII (Facial)?
Main Root: Posterior Auricular & Motor Axon
Chordate Tympani: Sensory Taste to Tongue & Pre-Ganglionic Submandibular Axon
Greater Petrosal: Sensory Taste to Palate & Pre-Ganglionic Pterygopalentine
