CN and Nuclei Flashcards
what is CN I?
olfactory
what does CN I do?
smell
what function fibers does CN I contain?
SVA
What is CN II?
optic
what does CN II do?
vision
what function fibers does CN II contain?
SSA
what is CN III?
oculomotor
what does CN III do?
eye movements, eyelid movements, pupil constriction
superior, middle, and inferior rectus
inferior oblique
levator palpabra
what function fibers does CN III contain?
GSE (maybe GVE too)
what is CN IV?
trochlear
what does CN IV do?
eye movements
superior oblique
what function fibers does CN IV contain?
GSE
what is CN V?
trigeminal
what does CN V do?
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
what functional fibers does the CN V contain?
SVE
GSA
what is CN VI?
abducens
what does the CN VI do?
lateral eye movements
lat rectus
what are the functional components of CN VI
GSE
what is CN VII?
facial
what does CN VII do?
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)
what are the functional components of CN VII?
SVA SVE GVA GVE GSA
what is CN VIII?
vestibulocochlear
what does the CN VIII do?
hearing and balance
what are the functional components of CN VIII?
SSA
what is CN IX?
glossopharyngeal
what does CN IX do?
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
what are the functional components of CN IX?
SVA SVE GVA GVE GSA
what is CN X?
vagus
what does CN X do?
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
what function components does CN X contain?
SVA SVE GVA GVE GSA
what is CN XI?
accessory
what does CN XI do?
traps and SCM
What does CN XI contain?
GSE or GVE?** (spinal component)
SVE (cranial component from ambiguous)
**Igor’s email says GVE but I have also seen GSE in other sources
What is CN XII?
hypoglossal
what does CN XII do?
tongue muscles
what functional components does CN XII contain?
GSE
what are the oculomotor nuclei?
oculomotor nucleus
edinger-westphal nucleus
what are the trochlear nuclei?
trochlear nucleus
what are the trigeminal nuclei?
motor nucleus of V
chief nucleus
mesencephalic nucleus
spinal nucleus
what are the abducens nuclei?
just abducens nucleus
what are the facial nuclei?
facial nucleus
spinal nucleus
solitarius
superior salivatory nucleus
what are the vestibulocochlear nuclei?
cochlear nucleus
vestibular nucleus
what are the glossopharangeal nuclei?
solitarius
ambiguus
spinl nucleus
inferior salivatory nucleus
what are the vagus nuclei?
dorsal motor nucleus
solitarius
ambiguus nucleus
spinal nucleus
what are the accessory nulcei?
spinal accessory nucleus
ambiguus nucleus
what are the hypoglossal nuclei?
just hypoglossal nucleus
