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Clinical Anatomy 1 > CRANIAL NERVE TRIVIA!!! > Flashcards

CRANIAL NERVE TRIVIA!!! Flashcards

1
Q

What are the branches of CN XII?

A

Hypoglossal n. (motor)

  • genioglossus
  • hyoglossus
  • styloglossus
  • intrinsic mm of tongue
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2
Q

What is the origin of CN XII?

A

hypoglossal

medulla (medial aspect, olive)

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3
Q

What does CN XII travel through?

A

hypoglossal

hypoglossal canal

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4
Q

What is the motor nucl. of CN XII?

A

hypoglossal

hypoglossal nucl.

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5
Q

What are the branches of CN XI?

A

accessory (motor)

  • SCM
  • trapezius
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6
Q

What is the origin of CN XI?

A

accessory

brainstem (C1-5)

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7
Q

What does CN XI travel through?

A

accessory

f. magnum (b/c originates from brainstem)
jugular f.

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8
Q

What are the branches of CN X?

A

vagus

pharyngeal n.

  • branchial motor: palate and pharynx mm
  • parasympathetic: palate and pharynx mucosa
  • sensory touch/proprioception

Internal laryngeal br. of superior laryngeal

  • parasympathetic: epiglottis vocal cord mucosa
  • sensory: touch
  • sensory: taste, epiglottis

External laryngeal br. of superior laryngeal

  • branchial motor: cricothyroid m
  • sensory: proprioception

Recurrent laryngeal n.

  • branchial motor: intrinsic mm of larynx
  • parasympathetic: vocal cord trachea mucosa
  • sensory: proprioception

Vagal trunks

  • sensory: visceral
  • parasympathetic: visc. thorax and abdomen

Thoracic cardiac
- sensory: visceral (aortic arch, mmHg)

Auricular br.
- sensory: touch

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9
Q

What is the origin of CN X?

A

Vagus

medulla

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10
Q

What is the sensory ganglion of CN X?

A

vagus

superior and inferior ganglion (bean)

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11
Q

What does CN X travel through?

A

vagus

jugular f.

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12
Q

What is the branchial motor nucl. of CN X?

A

vagus

nucl. ambiguus

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13
Q

What is the parasympathetic nucl. of CN X?

A

vagus

dorsal motor nucl.

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14
Q

What is the result of a CN X lesion?

A

Branchial motor: dysphagia, weak/hoarse voice, saggy palatal arch, contralat uvula deviation
Pre-para: insignificant if unilateral
Sensory: anesthesia of ext auditory canal
Sensory, visceral: insignificant if unilateral
Taste: insignificant

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15
Q

Which nerves have branchial motor axons?

A

CN V3 - trigeminal, mandibular
CN VII - facial
CN IX - glossopharyngeal
CN X - vagus

(4)

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16
Q

Which nerves have motor, sensory, and parasympathetic axons?

A

CN VII - facial
CN IX - glossopharyngeal
CN X - vagus

(3)

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17
Q

Which nerves originate from the cerebrum?

A

CN I - olfactory

CN II - optic

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18
Q

Which nerves originate from the midbrain?

A

CN III - oculomotor

CN IV - trochlear (contralateral)

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19
Q

Which nerves originate from the pons?

A

CN V1-3 - trigeminal, ophthalmic-maxillary-mandibular
CN VI - abducens
CN VII - facial
CN VIII - vestibulocochlear

(4)

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20
Q

Which nerves originate from the medulla?

A

CN IX - glossopharyngeal
CN X - vagus
CN XII - hypoglossal

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21
Q

Which nerves originate from the brainstem?

A

CN XI - accessory

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22
Q

What are the branches of CN IX?

A

glossopharyngeal

n. to stylopharyngeus
- motor
- sensory

carotid n.

  • sensory: visceral
  • – carotid (O2/CO2)
  • – carotid sinus (mmHg)

lingual br.

  • sensory: taste
  • sensory: post 1/3 tongue

tonsilar br.
- sensory: tonsil bed

pharyngeal br.
- sensory: upper pharynx (gag reflex)

tympanic n.
- sensory: inner ear

lesser petrosal n.
- parasympathetic to otic ganglion to parotid gl. “SPIT”

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23
Q

What is the branchial motor nucl. of CN IX?

A

glossopharyngeal

nucl. ambiguus

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24
Q

What is the parasympathetic nucl. of CN IX?

A

glossopharyngeal

inferior salivatory nucl.

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25
What does CN IX travel through?
glossopharyngeal jugular f. tympanic canaliculus - tympanic n. hiatus for lesser petrosal n. - lesser petrosal n. - into middle fossa (?) f. ovale - lesser petrosal n.
26
What is the parasympathetic ganglion of CN IX?
glossopharyngeal otic ganglion to parotid gl. "SPIT" suspended from auriculotemporal n. of CN V3
27
What is the sensory ganglion of CN IX?
glossopharyngeal superior and inferior ganglion (bean)
28
What are the branches of CN VII?
facial greater petrosal n. to n. of pterygoid canal - sensory: taste (palate) (travels w/ lesser palatine br. of CN V2) - parasympathetic to pterygopalatine ganglion to lacrimal gl. "CRY" and to "SNOT" - travels with deep petrosal n. (postsympathetic) chorda tympani - sensory: taste, ant 2/3 tongue - parasympathetic: submandibular ganglion to sublingual gl. and submandibular gl. "SPIT" main root n. to stapedius - branchial motor - sensory posterior auricular n. - sensory muscular branches - posterior digastric - stylohyoid muscular branches - temporal - zygomatic - buccal - mandibular - cervical
29
What does CN VII travel through?
facial internal auditory meatus stylomastoid f. - main root to muscular branches (TZBMC, post. digastric, stylohyoid) petrotympanic fissure - chorda tympani hiatus for greater petrosal n. - greater petrosal n. pterygoid canal - n. of pterygoid canal - deep petrosal n. (postsymp) pterygopalatine fossa - pterygopalatine ganglion - sensory br. taste (palate)
30
What is the branchial motor nucl. of CN VII?
facial facial motor nucl.
31
What is the sensory ganglion of CN VII?
facial geniculate ganglion
32
What is the parasympathetic nucl. of CN VII?
facial superior salivatory nucl.
33
What is the origin of CN VII?
facial pons
34
What are the parasympathetic ganglion of CN VII?
facial pterygopalatine ganglion - lacrimal gl. "CRY" - "SNOT" - suspended from trigeminal, maxillary CN V2 submandibular ganglion - sublingual and submandibular gl. "SPIT" - suspended from lingual br. of trigeminal, mandibular CN V3
35
What are the branches of CN VI?
abducens abducens n. - motor: lateral rectus
36
What is the motor nucl. of CN VI?
abducens abducens nucl.
37
What does CN VI travel through?
abducens superior orbital fissure
38
What is the origin of CN VI?
abducens pons
39
What are the branches of CN V3?
trigeminal, mandibular meningeal n. - sensory deep temporal n. - sensory - branchial motor masseteric n. - sensory - branchial motor lateral pterygoid n. - sensory - branchial motor medial pterygoid n. - sensory - branchial motor buccal n. - sensory lingual n. - sensory: ant 2/3 tongue - suspends submandibular ganglion of CN VII inferior alveolar n. - n. to mylohyoid - -- branchial motor: anterior digastric, mylohyoid - -- sensory - mental n. - -- sensory auriculotemporal n. - sensory - suspends otic ganglion to parotid gl. of CN IX - hugs middle meningeal a.
40
What is the branchial motor nucl. of CN V3?
trigeminal, mandibular trigeminal motor nucl.
41
What is the sensory ganglion of CN V3?
trigeminal, mandibular trigeminal ganglion w/ trigeminal sensory nucl.
42
What does CN V3 travel through?
trigeminal, mandibular f. ovale f. spinosum - meningeal n. mandibular f., mental f. - inferior alveolar n. to mental n.
43
What is the origin of CN V3?
trigeminal, mandibular pons
44
What are the branches of CN V2?
trigeminal, maxillary pharyngeal n. - sensory lesser palatine n. - sensory greater palatine n. - sensory nasopalatine n. - sensory posterior superior lateral nasal n. - sensory posterior superior medial nasal n. - sensory posterior superior alveolar n. - sensory infraorbital n. - sensory anterior superior alveolar n. - sensory middle superior alveolar n. -sensory zygomatic n. - sensory - carries postpara to communicating br. to lacrimal br. V1 to lacrimal gl.
45
What does CN V2 travel through?
trigeminal, maxillary f. rotundum pterygopalatine fossa palatovaginal canal - pharyngeal n. lesser palatine f. - lesser palatine n. greater palatine f. - greater palatine n. sphenopalatine f. - n. to post. sup. lat./med. nasal - nasopalatine n. incisive fossa - nasopalatine n. pterygomaxillary fissure - posterior superior alveolar n. infraorbital groove/canal/foramen - infraorbital n. - ant. sup. alveolar n. - mid. sup. alveolar n. inferior orbital fissure - zygomatic n.
46
What is the origin of CN V2?
trigeminal, maxillary pons
47
What parasympathetic ganglion is suspended from CN V2?
trigeminal, maxillary pterygopalatine ganglion CN VII
48
What is the sensory ganglion of CN V2?
trigeminal, maxillary trigeminal ganglion w/ trigeminal sensory nucl.
49
What are the branches of CN V1?
trigeminal, ophthalmic ``` lacrimal n. - sensory --- lacrimal gl. --- cutaneous skin of forehead (communicating br. to V3) ``` frontal n. - supraorbital n. - -- sensory to skin above eye - supratrochlear n. - -- sensory to skin of forehead nasociliary n. - long ciliary - -- sensory to (?) - short ciliary - -- sensory to cornea - -- suspends ciliary ganglion CN III - infratrochlear - -- sensory to skin of bridge of nose - anterior ethmoidal - -- sensory to nasal cavity, skin of nose - posterior ethmoidal - -- sensory to nasal cavity
49
What does CN V1 travel through?
trigeminal, ophthalmic superior orbital fissure supraorbital f. - supraorbital n. anterior ethmoidal f. - anterior ethmoidal n. posterior ethmoidal f. - posterior ethmoidal n.
50
What is the sensory ganglion of CN V1?
trigeminal, ophthalmic trigeminal ganglion w/ trigeminal sensory nucl.
51
What is the origin of CN V1?
trigeminal, ophthalmic pons
52
What are the branches of CN IV?
trochlear trochlear n. - motor: superior oblique
53
What is the origin of CN IV?
trochlear midbrain (contralateral)
54
What is the motor nucl. of CN IV?
trochlear trochlear nucl.
55
What does CN IV travel through?
trochlear superior orbital fissure
56
What are the branches of CN III?
oculomotor superior ramus - motor: levator palpebrae superioris, superior rectus inferior ramus - motor: inferior oblique, inferior rectus, medial rectus - parasymp: ciliary ganglion to ciliary bodies/muscles (lens, accommodation) and iris (constriction) - --- suspended from short ciliary CN V1
57
What does CN III travel through?
oculomotor superior orbital fissure
58
What is the motor nucl. of CN III?
oculomotor oculomotor nucl.
59
What is the parasympathetic nucl. of CN III?
oculomotor accessory oculomotor nucl.
60
What is the origin of CN III?
oculomotor midbrain
61
What are the branches of CN II?
optic optic tract optic chiasm optic nerve retina
62
What is the origin of CN II?
optic cerebrum
63
What are the sensory nucl. of CN II?
optic ganglion cells retina
64
What does CN II travel through?
optic optic canal
65
What are CN II lesions?
optic bitemporal hemianopsia: horizontal cut through optic chiasm (temporal field) L/R homonymous hemianopsia: cut through optic tract (opposite of affected eye), temporal and nasal field effected L/R monocular blindness: cut through optic nerve
66
What are the branches of CN I?
olfactory olfactory n. - sensory: smell, olfactory mucosa of nose olfactory bulb olfactory tract
67
What is the origin of CN I?
olfactory cerebrum
68
What is the sensory nucl. of CN I?
olfactory nasal mucosa
69
What does CN I travel through?
olfactory cribriform foramina
70
What are CN I lesions?
olfactory anosmia: no smell, shearing of primary axons
71
What is a CN III lesion?
oculomotor M: ptosis (drooping eyelid) P: no pupillary reflex; mydriasis (no accomodation)
72
What is a CN IV lesion?
trochlear diplopia
73
What is a CN V1 lesion?
trigeminal, ophthalmic no blink (corneal) reflex, facial hemianesthesia
74
What is a CN V2 lesion?
trigeminal, maxillary facial hemianesthesia
75
What is a CN V3 lesion?
trigeminal, mandibular BM: jaw weakness; ipsilateral deviation of opened jaw S: facial hemianesthesia
76
What is a CN VI lesion?
abducens diplopia: medial drift eye
77
What is a CN VII lesion?
facial BM: bell's palsy, stapedius = hyperacusis P: loss of lacrimation, dry mouth S: insignificant S, taste: loss of taste in ipsilateral anterior tongue
78
What is a CN IX lesion?
glossopharyngeal BM: Slight dysphagia P: Partial dry mouth S: Anesthesia, loss of gag reflex S, visceral: Loss of carotid sinus reflex (if bilat lesion) S, taste: Loss of taste in posterior tongue ipsiltaerally
79
What is a CN XI lesion?
accessory weakness turning head toward opposite side and shrugging shoulders
80
What is a CN XII lesion?
hypoglossal ipsilateral deviation of protruding tongue

Clinical Anatomy 1 (44 decks)

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