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LECOM MS1 Gross Anatomy Exam 3 > Cranial Nerve Intro > Flashcards

Cranial Nerve Intro Flashcards

1
Q

What are the different axon types seen in cranial nerves

A 
GSA
GVA
GSE
GVE
SVE
SVA
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2
Q

What are SVE

A

special visceral efferent (just like GSE but the muscle is from a pharyngeal arch)

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3
Q

What is SVA

A

special visceral afferent

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4
Q

What do GSA neurons utilize in cranial nerves

A

sensory ganglia

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5
Q

What do GVE neurons utilize in cranial nerves

A

autonomic ganglia

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6
Q

What do GVA neurons utilize in cranial nerves

A

sensory ganglia

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7
Q

What do SVA neurons utilize

A

sensory ganglia

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8
Q

What is the major sensory nerve of the head

A

Trigeminal nerve CNV

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9
Q

What cranial nerves carry parasympathetics

A

CN III
CN VII
CN IX
CN X

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10
Q

What cranial nerves will hitch hike on CNV

A

GVEs from CN III, VI, IX

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11
Q

What nerves will the cervical plexus hitch hike on

A

CN III
CN XI
CN XII

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12
Q

What is the function of GSE

A

motor; to skeletal muscle only

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13
Q

What is the function of SVE

A

motor; ONLY to skeletal muscle derived from a pharyngeal arch

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14
Q

What is the function of GSA

A

sensation from body wall

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15
Q

What is the function of GVE

A

parasympathetic; motor to “viscera”

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16
Q

What is the function of GVA

A

sensation from viscera

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17
Q

What is the function of SVA

A

taste and olfaction

18
Q

What is the function of SSA

A

vision balance and hearing

19
Q

Where are cell bodies of afferent neurons found

A

psudounipolar cell bodies in sensory ganglia

20
Q

Which afferent neuron cell body is NOT found in a ganglia

A

CN V, cell bodies are found in the brain stem; involved in jaw movement

21
Q

What do efferent neurons innervate

A

skeletal muscle or viscera; motor

22
Q

How many neurons will be utilized by efferent neurons

A

2: one in the CNS and one in peripheral ganglia

23
Q

What nerves will be impacted by a vestibular nerve tumor

A

CN 7 and CN 8

24
Q

What types of fibers are found in CN3

A

GSE: for skeletal m
GVE: parasympathetic

25
Q

What nerve will CN3 hitch hike on

A

CN V1: short ciliary nerves

26
Q

What part of CN3 are the parasympathetic contained in

A

mainly in the medial aspect of the nerve towards the outside

27
Q

How might diabetes affect CN3

A

individuals with diabetes are susceptible to nerve infarcts that will impact the smallest vessels.

28
Q

What cranial nerves will distribute to the intra and extrocular muscles

A

CN 3, 4, 6

29
Q

What are the divisions of the trigeminal nerve

A

opthalmic V1
maxillary V2
mandibular V3

30
Q

What does the maxillary branch do

A

sensory of the head (face, eyes, nasal, oral cavity)

31
Q

What does the mandibular branch do

A

motor to muscles of mastication

32
Q

What nerve will supply motor innervation the facial muscles

A

CN 7

33
Q

What is the chorda tympanii

A

branch of facial nerve that passes under the ear drum and conveys taste information from the anterior part of the tongue and controls secretion of the salivary glands

34
Q

What muscle is innervated by CN IX

A

stylopharyngeus

35
Q

What nerve will receive sensory information from the carotid body/sinus

A

glossopharyngeal nerve

36
Q

What is the typanic nerve

A

a branch of glossopharyngeal nerve found in the tympanic canal

37
Q

What does the vagus nerve contribute to tast

A

root of tongue and epiglottis

38
Q

What are the parasympathetic ganglia utilized by cranial nerves

A 
COPS
Ciliary: CN3
PPG: CN7
Submandibular: CN&
CN10: intramural
39
Q

What are the sensory ganglia utlized by the cranial nerves

A 
TGIS9+10
Trigeminal: CN5
Geniculate: CN7
Inferior 9+10
Superior 9+10
40
Q

What muscles will be innervated by cranial nerve 11

A

SCM

trapezius

41
Q

What muscles will be innervated by CN 12

A

tongue muscles

42
Q

Where will the spinal accessory nerve leave the skull

A

jugular foramen

LECOM MS1 Gross Anatomy Exam 3 (17 decks)

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