Cranial Nerves Flashcards

1
Q

Most cranial nerves emerge from where

A

brain stem

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2
Q

what cranial nerve exits Cribriform foramina

A

olfactory

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3
Q

what is the target for CN II

A

retina

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4
Q

How does CN II exit the skull

A

optic canal

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5
Q

fiber type of CN III

A

somatic motor

parasympathetic

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6
Q

CN III exit

A

superior orbital fissure

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7
Q

CNIII parasympathetic portion

A

Ciliary muscle, Sphincter pupillae m.

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8
Q

CN III somatic motor targets

A

levator palpebrae superioris m.

superior, medial, and inferior rectus, inferior oblique

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9
Q

CN IV exit

A

superior orbital fissure

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10
Q

CN IV motor innervation

A

superior oblique

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11
Q

3 divisions of trigeminal nerve

A

Ophthalmic Division (CN V1)

Maxillary Division (CN V2)

Mandibular Division (CN V3)

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12
Q

opthalmic division exits the skull how

A

superior orbital fissure

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13
Q

maxillary exits skull how

A

foreman rotundum

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14
Q

mandibular division exits skull how

A

foramen ovale

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15
Q

muscles of mastication (temporalis, masseter, lateral & medial pterygoids), mylohyoid, anterior belly of digastric m, tensor veli palatini and tensor tympani mm.

A

somatic motor targets of mandibular division of trigeminal nerve

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16
Q

CN VI exits skill

A

superior orbital fissure

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17
Q

CN VI motor to what muscle

A

lateral rectus

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18
Q

CN VII exits skull

A

Stylomastoid foramen

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19
Q

stapedius, muscles of facial expression (buccinator, occipitofrontalis, orbicularis oris, orbicularis oculi, platysma), stylohoid m., posterior belly of digastric

A

motor of facial nerve

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20
Q

chorda tympani special sensory and parasympathetic

A

Special sensory target: anterior 2/3rds of tongue (taste)

Parasympathetic target: submandibular and sublingual glands

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21
Q

what nerve exits the skill via the Internal acoustic meatus

A

vestibulochoclealer

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22
Q

motor to Somatic motor to stylopharyngeus muscle via what nerve

A

Glossopharyngeal

23
Q

what nerve Visceral sensory to carotid body and sinus

A

Glossopharyngeal

24
Q

Targets:
Somatic sensory to oropharynx, soft palate and posterior 1/3 of tongue
Special sensory to posterior 1/3 of tongue

A

Glossopharyngeal

25
Q

Somatic sensory target: internal surface of tympanic membrane

A

tympanic nerve comes off Glossopharyngeal

26
Q

parasympathetic to parotid gland

A

Glossopharyngeal: Tympanic

27
Q

provides parasympathetic innervation to targets in thorax and abdomen.

A

vegus nerve

28
Q

what 2 CN exit the jugular foramen

A
  1. vegus

2. Glossal pharangeal

29
Q

Somatic motor to cricothyroid muscle

Somatic sensory to laryngeal mucosa superior to vocal folds

A

Vagus Superior Laryngeal Branch

30
Q

How does spinal assessory nerve exit skill

A

jugular foramen

31
Q

what nerve innervates SCM

A

spinal accessory

32
Q

how does CN XII exit skull

A

Hypoglossal canal

33
Q

what cranial nerve innervates: levator palprebre

A

CN: III oculomotor

34
Q

what cranial nerve innervates: parasympathetic) • Ciliary muscle and sphincter pupillae muscle

A

CN: III oculomotor

35
Q

what cranial nerve innervates: superior oblique

A

Trochlear

36
Q

V1: opthalmic (sensory motor or both)

A

sensory only

37
Q

V2: maxillary (sensory motor or both)

A

sensory only

38
Q

V3: mandibular (sensory motor or both)

A

somatic motor and sensory

39
Q

what cranial nerve is sensory to anterior 2/3 tongue

A

V3: mandibular

40
Q

what nerve is the muscles of mastication

A

mandibular

41
Q

3 branches of facial

A
  1. chorda tympani,
  2. branch to stapedius muscle
  3. greater petrosal
42
Q

what is the exit path of facial nerve

A

o Internal acoustic meatus >via stylomastoid foramen

43
Q

what is the mnemonic for muscles of stepedius

A
Brittany
orgasms
often 
on 
prom 

Seans
penis

44
Q

muscles of stepedius

A

stapedius, muscles of facial expression (buccinator, occipitofrontalis, orbicularis oris, orbicularis oculi, platysma), stylohoid m., posterior belly of digas

45
Q

taste to the anterior 2/3 on tongue

A

Facial: Chorda tympani

46
Q

what innervates submandibular and sublingual glands

A

Facial: Chorda tympani

47
Q

Lacrimal gland (parasympathetic only) and mucosa of nasal cavity

A

Facial: greater petrosal

48
Q

vestibulochclear

A

balance, hearing

49
Q

what nerve gives off Tympanic nerve

A

Glossopharyngeal

50
Q

what nerve innervated: stylopharyngeus muscle

A

Glossopharyngeal

51
Q

what nerve innervated: Visceral sensory target: carotid body and sinus

A

Glossopharyngeal

52
Q

innervates innervates internal tympanic membrane

A

Glossopharyngeal: tympanic nerve

53
Q

innervates parotid gland

A

Glossopharyngeal: tympanic nerve

54
Q

posterior 1/3 of tongue (taste)

A

Glossopharyngeal