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Anatomy and Radiology Test 3 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

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
Q

Peripheral processes of ophthalmic division

A

Front (supraorbital and supratrochlear)
Lacrimal
Nasociliary

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26
Q

Which branch of ciliary used by parasympathetic to hitch a ride?

A

Nasociliary

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27
Q

Long ciliary nerve contain

A

Sensory from nasociliary innervating cornea and iris
Post sym fibers from carotid plexus
NO PARA FIBERS

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28
Q

Short ciliary contain

A

Sensory from nasociliary innervating cornea and iris
Post sym fibers from carotid plexus
Postganglionic parasymp fibers

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29
Q

Maxillary divison of trigeminal leaves cranial cavity through ______ to enter _____

A

Foramen rotundum

Pterygopalatine fossa

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30
Q

Peripheral processes of maxillary division

A 
Infraorbital 
Greater and lesser palatine (descending palatine)
Zygomatic (cheek)
Posterior superior alveolar 
Sphenopalatine (nasal cavity)
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31
Q

Mandibular division leaves cranium through _____ to enter _____

A

Foramen ovale

INfratemporal fossa

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32
Q

Sensory mandibular branches

A

Inferior alveolar
Lingual
Buccal
Auriculotemporal

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33
Q

Auriculotemporal loops around

A

Middle meningeal artery

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34
Q

Trigeminal motor fibers supply

A

Muscles of mastication

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35
Q

Muscles of mastication

A

Masseter
Temporalis
Medial pterygoid
Lateral pterygoid

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36
Q

Cranial nerve 1

A

Olfactory nerve

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37
Q

Olvfactory nerve snsory ganglion

A

Dispersed through olfacotyr mucosa in nasal cavity

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38
Q

Peripheral process of CN1

A

At surface of olfactory mucosa

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39
Q

Central processes of CN1

A

Pass through cribiform to terminate in olfacotry bulb

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40
Q

Olfactory bulb axons form

A

Olfactory tract that travels to cortex

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41
Q

Cranial nerve 2

A

Optic nerve

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42
Q

Light excites

A

Retinal ganglion cells of the eye

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43
Q

Central processes of retinal ganglion cells leave eye through ____ to enter_____

A

Optic canal

Middle cranial fossa as the optic nerve

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44
Q

WHen are obtic visual fibers named optic tracts?

A

After chiasm

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45
Q

Visual vibers terminate in

A

Lateral geniculate nucleus of the thalamus

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46
Q

CN 3

A

Oculomotor nerve

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47
Q

Cell bodies of CN3

A

Oculomotor nucleus

48
Q

Superior division of oculomotor nerve

A

Superior rectus muscle and levator palpebra superioris muscle

49
Q

Inferior division of oculomotor nerve

A

Medial rectus
Inferior rectus
Inferior oblique

50
Q

Lesion to CN 3

A

Down and out position of the eye

51
Q

Pre-para fibers of CN3 originate from ____ and follow ________

A

Edinger westphal and follow inferior division

52
Q

Parasympathetic associated with oculomotor synapse in

A

CIliary ganglion

53
Q

Postganglionic parasymp fibers associated iwth oculomotor hitch ride on

A

Short ciliary nerves posterior to surface of sclera

PIerce slera

54
Q

Post-para of oculomotor innervate

A

Sphincter pupillae and ciliaris (contract eye)

55
Q

Symp fibers of oculomotor

A

Reach eye via blood vessels and then follow long and short ciliary

56
Q

Oculomotor fibers leave cranial cavity through ____ to enter _____

A

Superior orbital fissure to enter the orbit

57
Q

Cranial nerve 4

A

Trochlear nerve

58
Q

Cell bodies origin CN4

A

Trochlear nucleus

59
Q

What is unique about CN4

A

Only nerve to leave from brainstem posterior

60
Q

CN 4 innervates

A

Superior oblique

61
Q

How does CN4 leave cranial caivty

A

Superior orbital fissure

62
Q

CN 6

A

Abducens nerve

63
Q

CN 6 cell body origin

A

Abducens nucleus

64
Q

CN 6 innervates

A

Lateral rectus

65
Q

How does abducens nerve exit cranial cavity?

A

Superior orbital fissure

66
Q

CN 7

A

Facial nerve

67
Q

Fascial nerve somatomotor nucleus and what they innervate

A

Fascial nucleus

Fascial expresion and stylohyoid…posterior of digastric and stapedius

68
Q

Visceral motor nucleus of fascial nerve

A

Parasympathetic fibers
Superior salivary nucleus
Lacriminal gland, submandibular, sublingual, nasal mucous, and oral mucous glands

69
Q

Special sensory and somatosensory neuron cell bodies of fascial nerve

A

Geniculate ganglion at bend of facial canal

70
Q

Peripheral proccesses of geniculate ganglion innervate

A

Parts of external ear and taste receptors of anterior 2/3 of tongue

71
Q

Central processes of geniculate ganglion terminate in

A 
Spinal trigeminal nuclei 
Solitary nuclei (taste)
72
Q

Entrance of fascial nerve into fascial canal from cranial cavity

A

Internal auditory meatus

73
Q

Sylamastoid foramen is exit point of

A

Somatomotor and somatosensory fibers of the fascial nerve

74
Q

Fascial nerve motor branches

A 
Temporal
Zygomatic
Buccal
Mandibular
Cervial 
Ten Zebras Bit My Cupcake
75
Q

What are geniculate ganglion fibers renamed at exit of fascial to reenter middle cranial fossa

A

Greater petrosal nerve

76
Q

Greater petrosal nerve runs through ____ to become _______

A

Foramen lacerum

Nerve of the petrygoid canal

77
Q

Preganglionic para fibers of fascial nerve run from _____ to ________

A

Superior salivary nucelus to pterygopalatine ganglion

78
Q

Postganglionic fibers of parasymp of fasical hitch a ride on

A

CNV2 (maxillary division) to innervate musocsa of nasal and oral mucosa glands

79
Q

Symp fibers near fascial join _______ and follow parasym fibers

A

Nerve of the pterygoid canal

80
Q

Lacrimal postganglionic branches

A

Join with zygomatic and follow it into orbit…joint with lacrimal nerve and follow to lacrimal gladn

81
Q

How does chorda tympani exit the fascial canal?

A

THrough petrotympanic fissure into the infratemporal fossa

82
Q

Chorda tympani innervates ____ and is from cranial nerve _____

A

Parasympathetic
Submandibular gland
Sublingual gland
7

83
Q

Once in the infratemporal fossa, chorda tympani hitch a ride on

A

Lingual nerve until it approaches submandibular ganglion

84
Q

Chorda tympani nerve joins _____ nerve to innervate sublingual gland

A

Lingual nerve

85
Q

Central processes of taste innervate

A

Nucleus solitarius of the brainstem

86
Q

Peripheral procceses of taste path

A

Follow lingual and follow chordae tympani to reach geniculate ganglion

87
Q

Parasympathetic path of fascial nerve

A

Pre-para from superior salivary nucleus to submandibular and sublingual ganglion via chorda tympani

88
Q

Taste - fascial nerve

A

Follow chorda tympani back to solitary nucleus

89
Q

CN 8

A

Vestibulocochlear nerve

90
Q

Auditory system of CN8 cell bodies and where central processes end

A

Spiral ganglion

Terminate in cochlear nuclei

91
Q

Vestibular system of CN8 cell bodies and where central processes end

A

Vestibular nuclei

92
Q

Central processes of CN 8 pass through

A

Internal auditory meatus

93
Q

___ nerves pass through internal auditory meatus

A

Vestibulocochlear and facial nerve

94
Q

Jugular foramen contains

A

Internal jug vein
CN 9
CN 10
CN 11

95
Q

CN 9

A

Glossopharyngeal nerve - mostly sensory

96
Q

Sensory of glosso pharyngeal

A

Pharynx mucosa
Posterior 1/3 of tongue
Middle ear, auditory tubem inside of tympanic membrane
Barrow receptors and chemoreceptors of carotid arteries

97
Q

Pharynx mucosa sensory of glossopharyngeal goes to

A

nucleus solitarius

98
Q

Posterior 1/3 of tongue glossopharyngeal path

A

Somatosensory to spinal trigeminal

Taste to nucleus solitarius

99
Q

MIddle ear, tc of glossopharyngeal go to

A

Nucleus solitarius

100
Q

Barrow and chemo receptors of glossopharyngeal go to

A

Nucleus solitarius

101
Q

Motor of glossopharyngeal innervates

A

Stylopharyngeus muscle

102
Q

Pre-Parasympathetic of glossopharyngeal originate in _____ and innervate ______

A

Inferior salivary nucleus

Otic via the lesser petrosal nerve

103
Q

Post-para of glossopharyngeal innervates

A

Parotid glands

104
Q

Cell bodies vagus that innervate skeletal muscles

A

Nucleus ambigus

105
Q

Cell bodies of vagus responsible for smmooth muscle

A

Dorsal motor nuclei of vagus

106
Q

Sensory of vagus nerve

A

Superior or inferior ganglion of vagus nerve

107
Q

Superior ganglion of vagus innervate and terminate in

A

External auditory meatus and external tymp membrane

Terminates in Spinal trigeminal nucleus

108
Q

INferior gang of vagus innervates and terminates in

A

Sensory from more caudal regions/larynx

Terminates in nucleus solitarius

109
Q

CN 11

A

Accessory nerve

110
Q

How does CN11 enter cranial caivty

A

Foramen magnum

111
Q

How does CN11 exit cranial cavity

A

Jugular foramen

112
Q

CN 11 innervates

A

Sternocleidomastoid and trapezius

113
Q

CN 12

A

Hypoglossal nerve

114
Q

Cell bodies of CN 12

A

Hypoglossal nucleus

115
Q

CN 12 exits cranial cavity through ___ and loops around _____ artery

A

Hypoglossal canal

Occipital artery

116
Q

CN 12 innervates

A

Intrinsic and extrinsic tongue muscles

Anatomy and Radiology Test 3 (11 decks)

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