Cranial Nerves Flashcards

(116 cards)

1
Q

Purely motor nerves

A

4,6,11,12

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2
Q

Purely sensory nerves

A

1,2,8,V1, V2

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3
Q

Mix of sensory and motor

A

V3

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4
Q

Mix of sensory, motor, and parasympathetic

A

3,7,9,10

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5
Q

How are cranial nerves numbered?

A

From rostral to caudal

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6
Q

Most cranial nerves are associated with ____

A

The brainstem

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7
Q

Parts of the brainstem (rostral to caudal)

A

Midbrain, pons, medulla

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8
Q

Cranial nerve somatomotor nuclei

A

Brainstem
Equivalent to ventral horn of spinal cord
Innervate skeletal muscles of face and neck

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9
Q

Sensory ganglia of spinal nerves path

A

Peripheral process to sensory ganglia to central process to cranial nerve sensory nucleus

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10
Q

Peipheral process of cranial nerve sensory nerves associated iwht

A

a receptor

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11
Q

Central process of cranial nerve terminates in a

A

Cranial nerve sensory nucleus (equivalent to dorsal horn)

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12
Q

Preganglionic parasympathetic fibers of cranial nerves travel

A

With the cranial nerve in which it was associated and synapse in parasympathetic ganglion

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13
Q

Postganglionic parasympathetic fibers of cranial nerves travel

A

Hitch a ride on other nerves (typically 5)

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14
Q

Preganglionic sympathetic fibers of cranial originate

A

Lateral horn of spinal cord

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15
Q

Postganglionic sympathetic fibers of cranial originate from

A

Superior cervical ganglion

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16
Q

How can post-gang sym reach target?

A
On their own 
Carotid plexus (on internal and external carotids)
Follow internal carotids to skull and hitch a ride with CN5
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17
Q

Ganglia of the head and associated nerve

A

Ciliary (2)
Pterygopalatine (7)
Submandibular (7)
Otic (9)

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18
Q

Branches of trigeminal nerve supplying the face from superior to inferior

A

Ophthalmic
Maxillary
Mandibular

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19
Q

CN 5

A

Trigeminal nerve

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20
Q

Where are sensory trigeminal nerve cell bodies found

A

Trigeminal ganglion

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21
Q

Trigeminal somatosensory fibers

A

Peripheral processes
Ophtalmic (V1)
Maxillary (V2)
Mandibular (V3)

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22
Q

Trigeminal central processes terminate in

A

Spinal trigeminal nucleus

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23
Q

Cell bodies of trigeminal motor fibers innervating skeletal muscles

A

Trigeminal motor nucleus (ventral horn)

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24
Q

How does ophthalmic division leave the cranial cavity

A

Superior orbital fissure

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25
Peripheral processes of ophthalmic division
Front (supraorbital and supratrochlear) Lacrimal Nasociliary
26
Which branch of ciliary used by parasympathetic to hitch a ride?
Nasociliary
27
Long ciliary nerve contain
Sensory from nasociliary innervating cornea and iris Post sym fibers from carotid plexus NO PARA FIBERS
28
Short ciliary contain
Sensory from nasociliary innervating cornea and iris Post sym fibers from carotid plexus Postganglionic parasymp fibers
29
Maxillary divison of trigeminal leaves cranial cavity through ______ to enter _____
Foramen rotundum | Pterygopalatine fossa
30
Peripheral processes of maxillary division
``` Infraorbital Greater and lesser palatine (descending palatine) Zygomatic (cheek) Posterior superior alveolar Sphenopalatine (nasal cavity) ```
31
Mandibular division leaves cranium through _____ to enter _____
Foramen ovale | INfratemporal fossa
32
Sensory mandibular branches
Inferior alveolar Lingual Buccal Auriculotemporal
33
Auriculotemporal loops around
Middle meningeal artery
34
Trigeminal motor fibers supply
Muscles of mastication
35
Muscles of mastication
Masseter Temporalis Medial pterygoid Lateral pterygoid
36
Cranial nerve 1
Olfactory nerve
37
Olvfactory nerve snsory ganglion
Dispersed through olfacotyr mucosa in nasal cavity
38
Peripheral process of CN1
At surface of olfactory mucosa
39
Central processes of CN1
Pass through cribiform to terminate in olfacotry bulb
40
Olfactory bulb axons form
Olfactory tract that travels to cortex
41
Cranial nerve 2
Optic nerve
42
Light excites
Retinal ganglion cells of the eye
43
Central processes of retinal ganglion cells leave eye through ____ to enter_____
Optic canal | Middle cranial fossa as the optic nerve
44
WHen are obtic visual fibers named optic tracts?
After chiasm
45
Visual vibers terminate in
Lateral geniculate nucleus of the thalamus
46
CN 3
Oculomotor nerve
47
Cell bodies of CN3
Oculomotor nucleus
48
Superior division of oculomotor nerve
Superior rectus muscle and levator palpebra superioris muscle
49
Inferior division of oculomotor nerve
Medial rectus Inferior rectus Inferior oblique
50
Lesion to CN 3
Down and out position of the eye
51
Pre-para fibers of CN3 originate from ____ and follow ________
Edinger westphal and follow inferior division
52
Parasympathetic associated with oculomotor synapse in
CIliary ganglion
53
Postganglionic parasymp fibers associated iwth oculomotor hitch ride on
Short ciliary nerves posterior to surface of sclera | PIerce slera
54
Post-para of oculomotor innervate
Sphincter pupillae and ciliaris (contract eye)
55
Symp fibers of oculomotor
Reach eye via blood vessels and then follow long and short ciliary
56
Oculomotor fibers leave cranial cavity through ____ to enter _____
Superior orbital fissure to enter the orbit
57
Cranial nerve 4
Trochlear nerve
58
Cell bodies origin CN4
Trochlear nucleus
59
What is unique about CN4
Only nerve to leave from brainstem posterior
60
CN 4 innervates
Superior oblique
61
How does CN4 leave cranial caivty
Superior orbital fissure
62
CN 6
Abducens nerve
63
CN 6 cell body origin
Abducens nucleus
64
CN 6 innervates
Lateral rectus
65
How does abducens nerve exit cranial cavity?
Superior orbital fissure
66
CN 7
Facial nerve
67
Fascial nerve somatomotor nucleus and what they innervate
Fascial nucleus | Fascial expresion and stylohyoid...posterior of digastric and stapedius
68
Visceral motor nucleus of fascial nerve
Parasympathetic fibers Superior salivary nucleus Lacriminal gland, submandibular, sublingual, nasal mucous, and oral mucous glands
69
Special sensory and somatosensory neuron cell bodies of fascial nerve
Geniculate ganglion at bend of facial canal
70
Peripheral proccesses of geniculate ganglion innervate
Parts of external ear and taste receptors of anterior 2/3 of tongue
71
Central processes of geniculate ganglion terminate in
``` Spinal trigeminal nuclei Solitary nuclei (taste) ```
72
Entrance of fascial nerve into fascial canal from cranial cavity
Internal auditory meatus
73
Sylamastoid foramen is exit point of
Somatomotor and somatosensory fibers of the fascial nerve
74
Fascial nerve motor branches
``` Temporal Zygomatic Buccal Mandibular Cervial Ten Zebras Bit My Cupcake ```
75
What are geniculate ganglion fibers renamed at exit of fascial to reenter middle cranial fossa
Greater petrosal nerve
76
Greater petrosal nerve runs through ____ to become _______
Foramen lacerum | Nerve of the petrygoid canal
77
Preganglionic para fibers of fascial nerve run from _____ to ________
Superior salivary nucelus to pterygopalatine ganglion
78
Postganglionic fibers of parasymp of fasical hitch a ride on
CNV2 (maxillary division) to innervate musocsa of nasal and oral mucosa glands
79
Symp fibers near fascial join _______ and follow parasym fibers
Nerve of the pterygoid canal
80
Lacrimal postganglionic branches
Join with zygomatic and follow it into orbit...joint with lacrimal nerve and follow to lacrimal gladn
81
How does chorda tympani exit the fascial canal?
THrough petrotympanic fissure into the infratemporal fossa
82
Chorda tympani innervates ____ and is from cranial nerve _____
Parasympathetic Submandibular gland Sublingual gland 7
83
Once in the infratemporal fossa, chorda tympani hitch a ride on
Lingual nerve until it approaches submandibular ganglion
84
Chorda tympani nerve joins _____ nerve to innervate sublingual gland
Lingual nerve
85
Central processes of taste innervate
Nucleus solitarius of the brainstem
86
Peripheral procceses of taste path
Follow lingual and follow chordae tympani to reach geniculate ganglion
87
Parasympathetic path of fascial nerve
Pre-para from superior salivary nucleus to submandibular and sublingual ganglion via chorda tympani
88
Taste - fascial nerve
Follow chorda tympani back to solitary nucleus
89
CN 8
Vestibulocochlear nerve
90
Auditory system of CN8 cell bodies and where central processes end
Spiral ganglion | Terminate in cochlear nuclei
91
Vestibular system of CN8 cell bodies and where central processes end
Vestibular nuclei
92
Central processes of CN 8 pass through
Internal auditory meatus
93
___ nerves pass through internal auditory meatus
Vestibulocochlear and facial nerve
94
Jugular foramen contains
Internal jug vein CN 9 CN 10 CN 11
95
CN 9
Glossopharyngeal nerve - mostly sensory
96
Sensory of glosso pharyngeal
Pharynx mucosa Posterior 1/3 of tongue Middle ear, auditory tubem inside of tympanic membrane Barrow receptors and chemoreceptors of carotid arteries
97
Pharynx mucosa sensory of glossopharyngeal goes to
nucleus solitarius
98
Posterior 1/3 of tongue glossopharyngeal path
Somatosensory to spinal trigeminal | Taste to nucleus solitarius
99
MIddle ear, tc of glossopharyngeal go to
Nucleus solitarius
100
Barrow and chemo receptors of glossopharyngeal go to
Nucleus solitarius
101
Motor of glossopharyngeal innervates
Stylopharyngeus muscle
102
Pre-Parasympathetic of glossopharyngeal originate in _____ and innervate ______
Inferior salivary nucleus | Otic via the lesser petrosal nerve
103
Post-para of glossopharyngeal innervates
Parotid glands
104
Cell bodies vagus that innervate skeletal muscles
Nucleus ambigus
105
Cell bodies of vagus responsible for smmooth muscle
Dorsal motor nuclei of vagus
106
Sensory of vagus nerve
Superior or inferior ganglion of vagus nerve
107
Superior ganglion of vagus innervate and terminate in
External auditory meatus and external tymp membrane | Terminates in Spinal trigeminal nucleus
108
INferior gang of vagus innervates and terminates in
Sensory from more caudal regions/larynx | Terminates in nucleus solitarius
109
CN 11
Accessory nerve
110
How does CN11 enter cranial caivty
Foramen magnum
111
How does CN11 exit cranial cavity
Jugular foramen
112
CN 11 innervates
Sternocleidomastoid and trapezius
113
CN 12
Hypoglossal nerve
114
Cell bodies of CN 12
Hypoglossal nucleus
115
CN 12 exits cranial cavity through ___ and loops around _____ artery
Hypoglossal canal | Occipital artery
116
CN 12 innervates
Intrinsic and extrinsic tongue muscles