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Cranial Nerves Flashcards

1
Q

Which 3 cranial nerves are associated with the PNS

A

3, 7, 10

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2
Q

Somatic motor/general somatic is a __ __ fiber on __ __ muscle

A

Efferent motor

Voluntary striated

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3
Q

Visceral motor and general visceral
___ __ fibers
In ___, __ muscle, __ muscle, and __

A

Motor efferent

Autonomics, smooth, cardiac, glands

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4
Q

Somatic sensory and general sensory
__ __ fibers
Senses what
___ from muscles, joints, and tendons

A

Sensory afferrent

Pain, touch, temp, pressure on skin

Proprioception

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5
Q

Visceral sensory and general visceral

__ __ fibers
Reflex or pain sensation from __, __, __ __

A

Sensory afferrent

Visceral, glands, blood vessels

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6
Q

Cranial nerve for

Olfatction
Vision
Hearing

A

I

II

XII

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7
Q

Cranial nerve for

Balance

Taste

A

CN XII

CN VII, XI, X

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8
Q

CN I

Numerous olfactory nerve fibers pass through foramina in what

Synapse where

A

Cribiform plate

Olfactory bulb

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9
Q

CN I lesions at __ __ can lead to 3

A

Cribiform plate

Anosmia
Altered taste
CSF rhino rhea

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10
Q

Clinical testing CN I

A

Smell test

Make sure each nostril patent
Pt eyes close
Occlude each nostril one at a time
Present familiar, non irritating smells

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11
Q

CN II

__ sensory
Nerve cell bodies located where
Enters cranial fossa where
Fibers deccusate at __ __ and continue as __

A 
Special 
Retina 
Optic canal 
Optic chiasm 
Optic tract
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12
Q

CN II testing

Direct: __ pupil constricts when shining light. CN __

Consensual: __ pupil constricts, CN ___

A

Ipsilateral, II

Contra lateral, III

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13
Q

Pupillary light reflex

__ CN II
__ CN III
Constriction from ___ system

A

Afferrent
Efferent
Parasympathetic

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14
Q

CN III
___ function
Supplies __ of __ ocular muscles. All except __ _ and __ __
Also supplies __ __ and __ through ciliary ganglion

A

Motor
4 of 6
Superior oblique and lateral rectus
Sphincter pupillae, ciliaris

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15
Q

Trochlear nerve
___ function
Supplies __ __ muscle
Emerges from the __ aspect of the __

A

Motor
Superior oblique
Dorsal, midbrain

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16
Q

Abducens
__ function
Supplies __ __

A

Motor

Lateral rectus

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17
Q

3 nerves that pass through superior orbital fissure

A

3, 4, 6

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18
Q

How to test CN 3, 4, 6

A

Tracking

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19
Q

Divisions of CN V
V1
V2
V3

A

Ophthalmic, sensory

Maxillary, sensory

Mandibular, mixed sensory and motor

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20
Q

Where they exit through

V1
V2
V3

A

Superior orbital fissure
Foramen rotundum
Foramen ovale

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21
Q

CN V1
Only which function
Supplies what

A

Somatic sensory

Upper 1/3 of face, cornea, conjunctiva of upper eyelid

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22
Q

CN V2
What sensory only
Supplies what

A

Somatic sensory

Middle 1/3 of face, conjunctiva of inferior eyelid, mucosa of inferior nasal cavity, maxillary teeth

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23
Q

CN V3

Which functions

A

Somatic sensory and somatic motor

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24
Q

V3

Sensory innervation to what

A

Skin to inferior 1/3 of face
Anterior 2/3 of tongue
Floor of mouth and inferior oral vestibule
Mandibular teeth

25
V3 supplies motor innervation to what
``` Muscles of mastication Anterior belly of digastric Mylohyoid Tensor veli palatini Tensor tympani ```
26
CN V lesions Loss of sensation in what Trigeminal neuralgia affects pain areas in which branches Paralysis of what
Face Pain in V2 and V3 Muscles of mastication, deviation of mandible toward side of lesion
27
CN V testing 2 tests
Touch test of all 3 divisions Corneal reflex test: afferrent CN V, efferent CN VII
28
Cranial nerves in cavernous sinus 4
CN 3, 4, V1 and V2, 6
29
Facial nerve | Motor to what
Muscles of facial expression
30
Facial nerve Intermediate nerve does what
Taste to anterior 2/3 of tongue, chorda tympani to lingual nerve V3
31
Facial nerve PNS Preganglionic fibers where
Lacrimal, submandibular, sublingual glands And glands of nasal and palatine mucosa
32
Facial nerve Passes where through skull
Internal acoustic meatus, facial canal, stylomastoid foramen
33
Clinical testing CN VII Sensory testing Motor testing
Taste to anterior 2/3 of tongue with familiar taste Muscles of facial expression
34
CN VIII Sensory to what, contains which nerves
Hearing and equilibrium Cochlear nerve and vestibular nerve
35
CN VIII Enters where
Bony labyrinth of temporal bone through the internal acoustic meatus
36
How to test CN VIII
Air conduction through rinse test (put behind ear) Bone conduction through Webber test on top of head
37
CN IX What kind of sensory functions
General to Mucosa of pharynx, posterior 1/3 of tongue Taste posterior 1/3 of tongue
38
CN IX motor function Which muscle Contributes to which plexus with what other CN
Stylopharyngeus | Pharyngeal, 9, 10, 11
39
CN IX Exits skull where Assessed with what
Jugular foramen 9 and 10 tested at same time
40
CN 9 has what kind of function to which gland
Parasympathetic to parotid gland
41
CN X | Sensory function to where
Inferior pharynx, larynx, thoracic and abdominal organs
42
CN X motor nerve to what
Soft palate, laryngeal muscles, pharynx
43
CN X taste function to where
Root of tongue and epiglottis
44
Vagus nerve PNS function to where
Thoracic and abdominal viscera
45
Vagus nerve contributes to which plexus
Pharyngeal
46
Which nerves contribute to pharyngeal plexus
9, 10, 11
47
Vagus nerve exits skull where
Jugular foramen
48
CN 9 and 10 Contribute to which reflex and how
Gag reflex Touching posterior 1/3 of tongue
49
CN 9 and 10 Gagging 9- __ function 10- __ function
Afferrent | Efferent
50
CN 9 and 10 Motor function helps with what How to test What happens if issue
Clarity of speech Say ah while looking at soft palate Deviation of uvula away from side of lesion Hoarseness of voice
51
Vagus nerve Emerges where, descends where
Jugular foramen, carotid sheath
52
How vagus contributes to pharyngeal plexus
Motor innervation to pharynx and palate
53
Vagus nerve: motor function to all muscles of __ except for __
Larynx, cricothyroid
54
Spinal accessory nerve exits where
Jugular foramen
55
Which nerves exit jugular foramen
9, 10, 11
56
How to test cranial nerve 11
Rotate head to opposite side- SCM Shrug shoulders- trapezius
57
Hypoglossal nerve gives motor function to what
Muscles of tongue except for palatoglossal muscle
58
CN 12 exits skull where
Hypoglossal canal
59
How to test CN 12
Stick tongue out Atrophy on tongue of affected side, deviation to affected side

Anatomy (23 decks)

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