Flashcards in CN X Part 1 Deck (50)
What kind of info is carried by CN X?
motor, parasym and sensory (including taste)
Where does the vagus carry taste from?
T/F: CN X is the largest CN.
False; it is the longest CN
T/F: The vagus is the most important sympathetic CN.
False; it is the most important parasym nerve
Where are the cell bodies of motor fibers carried in CN X?
What kind of motor fibers are carried by CN X
branchial motor fibers
Which hemisphere does the nucleus ambiguus receive info from?
Where are the preganglionic parasym fibers of CN X from?
posterior (dorsal) nucleus of the vagus
T/F: CN X receives info indirectly from the hypothalamus and the carotid sinus.
Where does incoming somatic sensory info of the Vagus nerve terminate?
in the spinal nucleus of CN V
Taste and viscerosensory info (mostly from the gut) terminates in which nucleus?
nucleus of the solitary tract (or nucleus solitarius)
What are the two peripheral ganglia associated with CN X?
superior and inferior ganglia
T/F: The superior and inferior ganglia of the vagus nerve are shared by CN IX.
False; these are different ganglia
What is another name for the superior ganglion of CN X?
What is another name for the inferior ganglion of CN X?
Where are the cell bodies of the neurons which carry somatic sensory info associated with CN X/
Somatic Sensory info is carried by the Vagus nerve from the dura (infratentorial/posterior fossa), auricle, external auditory canal, lateral tympanic membrane and what other area(s)?
mucosa of the oropharynx and laryngopharynx
Where is somatic sensory info carried to by CN X?
spinal nucleus of CN V
Where is taste info (from epiglottis) carried to by CN X?
superior part of the nucleus for the solitary tract
Where are the neurons that carry taste info from the epiglottis?
Where is visceral sensory info carried to?
inferior part of the nucleus for the solitary tract
Where are the neurons that carry visceral sensory info?
inferior ganglion (just like taste from epiglottis)
What kind of info does the Vagus nerve carry from the larynx and laryngopharynx?
What kind of info does the Vagus nerve carry from the viscera in the thoracic and abdominal cavities?
What kind of info does the Vagus nerve carry from the pressure receptors in the aortic arch?
What kind of receptors are in the para-aortic body which the Vagus carries visceral sensory info from?
What is the apparent origin of the Vagus nerve?
a series of rootlets from the lateral aspect of the MO
How many branches are given off of the trunk formed by CN X before it exits the skull?
Where does the Vagus nerve exit the skull?