X carries ___ fibers
motor, parasymp, and sensory (including taste)
What is a major characteristic about X
longest cn
X is the most important __________ n.
parasymp
Cell bodies for motor nerves are located where
Nucleus Ambiguus
Nucleus Ambiguus receives sensory info from which hemisphere
both
Where do preganglionic paras fibers arise
Posterior nucleus of vagus
Where do pre para fibers indirectly receive info from
hypothalamus and carotid sinus
What tract do taste and visceroscensory info terminate
nucleus of solitary tract
What ganglia are associated with vagus
Superior and inferior ganglia
Superior ganglion aka
jugular ganglion
inferior ganglion aka
nodoes ganglion
Somatic sensory info cell bodies located for X
superior ganglion
What is X responsible for somatosensory
dura, auricle, external auditory canal, lateral tympanic membrane and muscosa of oropharynx and laryngopharynx
Where does somatosensory info from X terminate
spinal nucleus of trigeminal
Taste from cn X is carried to_________
superior part of nucleus solitary tract
where are the neurons for taste in cn X located?
inferior ganglion
Where does X carry visceral sensory info from?
larynx and laryngopharynx, viscera in hte thoracic and abdominal cavities, pressure receptors in the aortic arch and chemoreceptors in the para-aortic body
Apparent origin of X? as?
lateral aspect of MO as rootlets
Rootlets become trunk for X before X exits….
jugular foramen
What branch of X supplies dura of posterior cranial fossa
meningeal branch
what two nerves pass jugular foramen?
XI and X
where does X pass through jugular foramen
anterior to septum
What are X and XI surrounded by
meningeal sheath (arachnoid and dura)
Which ganglion is located in jugular foramen
superior
Which ganglion is largern superior or inferior
inferior
Where is inferior ganglion located
just inferior to jugular formamen
What branch is given off at superior ganglion
auricular branch
explain course of auricular branch of X
- mastoid canaliculus
- tympanomastoid fissure
- external auditory meatus
What does auricular branch carry/supply
sensory, from meatus and small portion of auricle
Where does vagus sit above carotid bifurcation
BETWEEN internal carotid and internal jugular in carotid sheath
where does X sit below carotid bifurcation
internal jugular and common carotid
what are the branch of X in the neck
- pharyngeal
- branches to the carotid
- superior laryngeal
- recurrent laryngeal
- superior and inferior cervical cardiac branches
Where does pharyngeal branch of X leave X
@ level of inferior ganglion
What will combine with pharyngeal of X
IX and sympathetic fibers from sympathetic trunk
What do IX and Sympathetic fibers from sympathetic trunk form
pharyngeal plexus
What doespharyngeal of X supply motor to
pharyngeal constrictor and levator veli palatine (soft palate)
Which ganglion are branches to the carotid given off
inferior
What does the branches to the carotid carry? where relay info?
viscerosensory fibers that relay info from chemorecptors in carotid body to inf. part of nucleus for solitary tract
Branches of superior laryngeal n of X
internal and external laryngeal nerve
External Laryngeal of X supplies…
motor to cricothyroid
Internal laryngeal of X supplies
sensory from laryngeal mucosa to vocal folds
What two nerves are seperated by vocal folds for sensory innervation
- internal laryngeal of superior laryngeal of x
- recurrent laryngeal of x
Whta does recurrent laryngeal supply
- motor to all muscles of laynx except cricothryoid
- sensory info to larynx below vocal folds
Which n of X loops in from of aortic arch
left recurrent laryngeal
What does left recurrent laryngeal become
inferior laryngeal nerve
what does recurrent laryngeal of x supply
laryngeal musculature
what n of X passes post to subclavian arter
rt recurrent laryngeal
What kind of info do sup and inf cervical cardiac branches carry to cardiac plexus?
parasymp
How many para branch contribute to cardiac plexus? symp branches?
2, 3
Superior branches leave vagus and travel with __________ to cardiac plexus
great vessels
what branches are given off recurrent laryngeal and go to cardiac plexus
inferior branches
The branch that carries viscerosensory info concerning pressure will be stimulated if…
aortic pressure becomes too high
As X enters thorax it passes_______ to contribute to what plexus
posterior to root of ipsilat lung, pulmonary
Where do rt vs lt vagus pass esophogus ? plexus?
lt- ant
rt- posterior
esophogeal
RT or LT become posterior vagal trunk
rt
postior vagal trunk sends branches to? terminates? which goes to
post. stomach, large celiac branch -> duodenum, liver, kidnes, small intestine, and prox 2/3 large intestine
Vagal supply reaches duodenum, liver, kidnes, small intestine, and prox 2/3 large intestine through? (3 plexuses)
- celiac
- superior mesenteric
- renal
What nerve comes anterior vagal trunk?
left vagus
Where does left X become ant vagal trunk
before esophageal opening
where does rt X become post vagal trunk
after esophagel opening
Where does anterior vagal trunk send branches
stomach, liver, pancrea, and sup part of duodenum