Glossopharyngeal nerve Flashcards
Motor cell bodies for the glossopharyngeal nerve are located where?
superior part of the nucleus ambiguus
what type of information is carried by the glossopharyngeal nerve?
motor, sensory, autonomic (parasymthetic preganglionic) fibers
where do preganglionic parasympathetic fiber arise from?
inferior salivatory nucleus
Afferent sensory fibers terminate where?
the solitary nucleus and spinal nucleus of trigeminal
the glossopharyngeal nerve has two peripheral ganglia what are they?
superior (smaller) and inferior (petrosal) ganglion
where does general sensory information of the glossopharyngeal nerve come from?
from the nasopharynx, oropharnyx, and portion of the tongue posterior to the sulcus terminalis, uvula, and palatine tonsils
The glossopharyngeal nerve also carries general sensation from where?
the tympanic cavity
the cell bodies for the glossopharyngeal nerve are located where?
inferior ganglion
general sensation information carried by the glossopharyngeal nerve synapse where?
spinal nucleus of the trigeminal nerve
taste information from the posterior 1/3 of the tongue are carried by neuron from where?
inferior ganglion
taste axons terminate where
superior part of the solitary nucleus
some incoming fibers from the inferior ganglion synapse where?
the lower part of the solitary nucleus
what type of information is carried from the carotid sinus and carotid body?
visceral afferent information
the nucleus ambiguus contributes lower neurons to where?
three cranial nerves (IX, X, XI)
lower motor neuron of the glossopharyngeal nerve will innervate what?
stylopharyngeus muscle
what information does the inferior salivatory nucleus carry?
preganglionic parasympathetic
where will fibers from the inferior salivatory nucleus synapse?
otic ganglion
Postganglionic fibers from the otic ganglion supply what glands?
parotid galnd, buccal gland, and inferior labial gland
the apparent origin of the glossopharyngeal nerve is?
superior lateral aspect of the medulla oblongata
where does the glossopharyngeal nerve exist the skull?
posterior to the septum in the jugular foramen
what ganglion is located inside the cranium and which is outside?
superior ganglion is inside
inferior ganglion is outside
where does the tympanic nerve come from and what does it carry?
the inferior ganglion and carries preganglionic parasympathetic fibers and sensory fibers
describe the path the tympanic to tympanic plexus
inferior ganglion, through the tympanic canaliculus, tympanic cavity, to the superior cervical ganglion, to tympanic plexus
what type of information does the tympanic plexus and where does
somatosensory information from tympanic cavity, pharyngotympanic tube, and mastoid air cells
preganglionic parasympathetic travel from the tympanic plexus to from what?
lesser petrosal nerve
the lesser petrosal nerve goes where?
the otic ganglion via the lesser petrosal canal
postganglionic parasympathetic fibers from the otic ganglion are carried by what?
C.N. V (mandibular division) to the parotid, buccal, and inferior labial glands
the carotid branch carries what type of information to the inferior ganglion
afferent information from the chemoreceptor from the carotid body and baroreceptors from the carotid sinus
what other nerve carries information similar to the carotid branch
vagus nerve
the pharyngeal branches carry what type of information
sensory information from the mucosa of the pharynx
what branches make up the pharyngeal plexus
pharyngeal branches and the vagal branches
what does the muscular branch supply
the stylopharyngeus
actions of the stylopharyngeus
elevates the larynx, elevates pharynx, dilates the pharynx
what information is carried by the tonsillar branch
sensory information from the palatine tonsils and oral mucosa
the lingual branch is carries what type of information
general sensory and taste information (bitter and sour) from the togue, posterior to the sulcus terminalis
