Cranial Nerve Intro

Question 1

What are the different axon types seen in cranial nerves

Answer 1

GSA
GVA
GSE
GVE
SVE
SVA

Question 2

What are SVE

Answer 2

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

Question 3

What is SVA

Answer 3

special visceral afferent

Question 4

What do GSA neurons utilize in cranial nerves

Answer 4

sensory ganglia

Question 5

What do GVE neurons utilize in cranial nerves

Answer 5

autonomic ganglia

Question 6

What do GVA neurons utilize in cranial nerves

Answer 6

sensory ganglia

Question 7

What do SVA neurons utilize

Answer 7

sensory ganglia

Question 8

What is the major sensory nerve of the head

Answer 8

Trigeminal nerve CNV

Question 9

What cranial nerves carry parasympathetics

Answer 9

CN III
CN VII
CN IX
CN X

Question 10

What cranial nerves will hitch hike on CNV

Answer 10

GVEs from CN III, VI, IX

Question 11

What nerves will the cervical plexus hitch hike on

Answer 11

CN III
CN XI
CN XII

Question 12

What is the function of GSE

Answer 12

motor; to skeletal muscle only

Question 13

What is the function of SVE

Answer 13

motor; ONLY to skeletal muscle derived from a pharyngeal arch

Question 14

What is the function of GSA

Answer 14

sensation from body wall

Question 15

What is the function of GVE

Answer 15

parasympathetic; motor to “viscera”

Question 16

What is the function of GVA

Answer 16

sensation from viscera

Question 17

What is the function of SVA

Answer 17

taste and olfaction

Question 18

What is the function of SSA

Answer 18

vision balance and hearing

Question 19

Where are cell bodies of afferent neurons found

Answer 19

psudounipolar cell bodies in sensory ganglia

Question 20

Which afferent neuron cell body is NOT found in a ganglia

Answer 20

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

Question 21

What do efferent neurons innervate

Answer 21

skeletal muscle or viscera; motor

Question 22

How many neurons will be utilized by efferent neurons

Answer 22

2: one in the CNS and one in peripheral ganglia

Question 23

What nerves will be impacted by a vestibular nerve tumor

Answer 23

CN 7 and CN 8

Question 24

What types of fibers are found in CN3

Answer 24

GSE: for skeletal m
GVE: parasympathetic

Question 25

What nerve will CN3 hitch hike on

Answer 25

CN V1: short ciliary nerves

Question 26

What part of CN3 are the parasympathetic contained in

Answer 26

mainly in the medial aspect of the nerve towards the outside

Question 27

How might diabetes affect CN3

Answer 27

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

Question 28

What cranial nerves will distribute to the intra and extrocular muscles

Answer 28

CN 3, 4, 6

Question 29

What are the divisions of the trigeminal nerve

Answer 29

opthalmic V1 maxillary V2 mandibular V3

Question 30

What does the maxillary branch do

Answer 30

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

Question 31

What does the mandibular branch do

Answer 31

motor to muscles of mastication

Question 32

What nerve will supply motor innervation the facial muscles

Answer 32

CN 7

Question 33

What is the chorda tympanii

Answer 33

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

Question 34

What muscle is innervated by CN IX

Answer 34

stylopharyngeus

Question 35

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

Answer 35

glossopharyngeal nerve

Question 36

What is the typanic nerve

Answer 36

a branch of glossopharyngeal nerve found in the tympanic canal

Question 37

What does the vagus nerve contribute to tast

Answer 37

root of tongue and epiglottis

Question 38

What are the parasympathetic ganglia utilized by cranial nerves

Answer 38

``` COPS Ciliary: CN3 PPG: CN7 Submandibular: CN& CN10: intramural ```

Question 39

What are the sensory ganglia utlized by the cranial nerves

Answer 39

``` TGIS9+10 Trigeminal: CN5 Geniculate: CN7 Inferior 9+10 Superior 9+10 ```

Question 40

What muscles will be innervated by cranial nerve 11

Answer 40

SCM | trapezius

Question 41

What muscles will be innervated by CN 12

Answer 41

tongue muscles

Question 42

Where will the spinal accessory nerve leave the skull

Answer 42

jugular foramen