CN and Nuclei

Question 1

what is CN I?

Answer 1

olfactory

Question 2

what does CN I do?

Answer 2

smell

Question 3

what function fibers does CN I contain?

Answer 3

SVA

Question 4

What is CN II?

Answer 4

optic

Question 5

what does CN II do?

Answer 5

vision

Question 6

what function fibers does CN II contain?

Answer 6

SSA

Question 7

what is CN III?

Answer 7

oculomotor

Question 8

what does CN III do?

Answer 8

eye movements, eyelid movements, pupil constriction
superior, middle, and inferior rectus
inferior oblique
levator palpabra

Question 9

what function fibers does CN III contain?

Answer 9

GSE (maybe GVE too)

Question 10

what is CN IV?

Answer 10

trochlear

Question 11

what does CN IV do?

Answer 11

eye movements

superior oblique

Question 12

what function fibers does CN IV contain?

Answer 12

GSE

Question 13

what is CN V?

Answer 13

trigeminal

Question 14

what does CN V do?

Answer 14

V1=touch to nose and forehead
V2=touch to lateral nose and zygomatic arch
V3=touch to manible and and 2/3 of tongue
SVE=muscles of mastication

Question 15

what functional fibers does the CN V contain?

Answer 15

SVE

GSA

Question 16

what is CN VI?

Answer 16

abducens

Question 17

what does the CN VI do?

Answer 17

lateral eye movements

lat rectus

Question 18

what are the functional components of CN VI

Answer 18

GSE

Question 19

what is CN VII?

Answer 19

facial

Question 20

what does CN VII do?

Answer 20

SVA=taste to ant 2/3 tongue
GSA=touch to ear (through CN V)
SVE=muscles of facial expression
GVA=ear
GVE=glands (lacrimal and salivary glands)

Question 21

what are the functional components of CN VII?

Answer 21

SVA
SVE
GVA
GVE
GSA

Question 22

what is CN VIII?

Answer 22

vestibulocochlear

Question 23

what does the CN VIII do?

Answer 23

hearing and balance

Question 24

what are the functional components of CN VIII?

Answer 24

SSA

Question 25

what is CN IX?

Answer 25

glossopharyngeal

Question 26

what does CN IX do?

Answer 26

``` SVA=taste post 1/3 of tongue GSA=ear SVE=pharynx GVA=touch, pain, temp to post 1/3 of tongue, pharynx, palate, tube, carotid body/sinus GVE=parotid gland salivary reflex gag reflex-afferent portion ```

Question 27

what are the functional components of CN IX?

Answer 27

``` SVA SVE GVA GVE GSA ```

Question 28

what is CN X?

Answer 28

vagus

Question 29

what does CN X do?

Answer 29

SVA taste, GSA ear, SVE soft palate/larynx, GVA oropharynx, abdominal and thoracic viscera GVE abdominal and thoracic viscera carotid sinus reflex (lowers HR and BP) so parasympathetic to heart

Question 30

what function components does CN X contain?

Answer 30

``` SVA SVE GVA GVE GSA ```

Question 31

what is CN XI?

Answer 31

accessory

Question 32

what does CN XI do?

Answer 32

traps and SCM

Question 33

What does CN XI contain?

Answer 33

GSE or GVE?** (spinal component) SVE (cranial component from ambiguous) **Igor's email says GVE but I have also seen GSE in other sources

Question 34

What is CN XII?

Answer 34

hypoglossal

Question 35

what does CN XII do?

Answer 35

tongue muscles

Question 36

what functional components does CN XII contain?

Answer 36

GSE

Question 37

what are the oculomotor nuclei?

Answer 37

oculomotor nucleus | edinger-westphal nucleus

Question 38

what are the trochlear nuclei?

Answer 38

trochlear nucleus

Question 39

what are the trigeminal nuclei?

Answer 39

motor nucleus of V chief nucleus mesencephalic nucleus spinal nucleus

Question 40

what are the abducens nuclei?

Answer 40

just abducens nucleus

Question 41

what are the facial nuclei?

Answer 41

facial nucleus spinal nucleus solitarius superior salivatory nucleus

Question 42

what are the vestibulocochlear nuclei?

Answer 42

cochlear nucleus | vestibular nucleus

Question 43

what are the glossopharangeal nuclei?

Answer 43

solitarius ambiguus spinl nucleus inferior salivatory nucleus

Question 44

what are the vagus nuclei?

Answer 44

dorsal motor nucleus solitarius ambiguus nucleus spinal nucleus

Question 45

what are the accessory nulcei?

Answer 45

spinal accessory nucleus | ambiguus nucleus

Question 46

what are the hypoglossal nuclei?

Answer 46

just hypoglossal nucleus