facial nerve Flashcards
what CN leave via the cerebropontine angle
6, 7, 8
components of CN 7
motor
intermediate
where does CN 7 exit
internal acousitic meatus with 8
branches of facial nerve
main branch
chorda tympani
greater petrosal
main branch of facial nerve exits via
styloid mastoid foramen
function of main branch of facial nerve
general sensory to auricle
branchial motor
chorda tympani nerve exits via
middle ear cavity
function of chorda tympani
taste to anterior 2/3 of tongue
visceral motor to 2/3 salivary glands
exit of greater petrosal nerve
petrous portion of temporal bone
function of greater petrosal nerve
visceral motor to lacrimal, nasal, and alatine glands
visceral sensory to small part of soft palate
geniculum of facial nerve
descent of facial nerve after leaving geniculate ganglion
geniculate ganlgion
sensory ganglion for facial nerve
proprioception of facial nerve goes to
mesocephalic nucleus of V
pain and temperature of facial nerve go to
spinal nucleus of V
fine touch of facial nerve goes to
peripheral sensory nucleus of V
exit of chord tympani nerve
petrotympanic fissure
where does the chorda tympani nerve join the lingual nerve and why does it do this
at the infra temporal fossa
so presynpatic parasympathetic fibers can get to the sensory ganglion of VII (geniculate ganglion) to get back to the solitary nucleus in the brain
where does signal to salivate originate
supeiror salvitory nucleus
submandibular ganglion
where parasympathetic synapse to get to the salivary glands
where does the greater petrosal nerve exit
middle cranial fossa via foramen for greater petrosal nerve
pterygoid ganglion
where greater petrosal nerve synapses and post para go to glands via V branches
pterygopalatine ganglion
synapse site for emotional tearing- to get to lacrimal gland
