CN X Flashcards by Anna Farrell

Regarding the GAG REFLEX pathway of CN X:

Cell bodies in inferior ganglion of CN IX project to the __________ if SOMATIC SENSORY

spinal trigeminal nucleus

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Regarding the SOMATIC SENSORY pathway of CN X:

the fibers form the superior ganglion of CN X travel through the

spinal trigeminal tract

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Regarding the GAG REFLEX pathway of CN X:

Motor limb = CN

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Regarding the VISCERAL MOTOR pathway of CN X:

the pathway gets input from what 3 areas

hypothalamus, reticular formation, solitary nucleus

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Regarding the GAG REFLEX pathway of CN X:

Cell bodies in inferior ganglion of CN IX project to the __________ if VISCERAL SENSORY

solitary nucleus

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CN X carries TASTE innervation to where

epiglottis

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BELOW the vocal fold –> the recurrent/inferior laryngeal nerve carries _______ to ________

visceral sensory ; infraglottic cavity

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The SOMATIC SENSORY fibers of CN X provide sensation to the following 2 places

External surface tympanic membrane & external auditory canal

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Regarding CN X:

the 1st order cell bodies for VISCERAL SENSORY and TASTE) are where?

inferior (nodose) ganglion of CN X

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Regarding the GAG REFLEX pathway of CN X:

Fibers exit __________ to _______ muscles

nucleus ambiguous ; pharyngeal

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the external laryngeal nerve carries _________ to ________ muscle

somatic motor ; cricothyroid

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a LMN lesion of CN X will cause ______ vocal fold weakness (hoarseness)

UNILATERAL

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Regarding the TASTE pathway of CN X:

the 1st order cell bodies are in the

inferior ganglion of CN X

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Regarding CN X:

the 2nd order cell bodies for PAIN, TEMPERATURE, NON-DISCRIMINATIVE TOUCH are where?

spingal trigeminal nucleus

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Regarding the SOMATIC MOTOR pathway of CN X:

Axons of upper motor neurons form _________

corticobulbar tract

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Regarding the taste pathways of CN X:

the 1st order cell bodies for CN IX are in the

inferior ganglion of CN IX

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SOMATIC MOTOR fibers of CN X are in the

nucleus ambiguous

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Regarding the taste pathways of CN X:

the 2nd order axons also project to the superior and inferior _____________ for the ________ reflex which stimulates salivation

salivary nuclei ; taste

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Regarding the TASTE pathway of CN X:

Fibers from inferior ganglion of CN X travel to 2nd order cell bodies in the

solitary nucleus

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ABOVE the vocal fold –> the recurrent/inferior laryngeal nerve carries _______ to muscles of ________ (except cricothyroid)

somatic motor ; larynx

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Regarding the SOMATIC SENSORY pathway of CN X:

the fibers project __________ in the ____________ tract to 3rd order neurons

contralaterally ; ventral trigeminothalamic

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the auricular nerve carries _________ from __________

Somatic sensory from external ear

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CN X carries the main VISCERAL SENSORY innervation to what 4 places except for the hindgut

larynx, laryngopharynx, thoracic & abdominal viscera EXCEPT hindgut

the pharyngeal nerve carries ________ to muscles of ______ & ____

(except stylopharyngeus & tensor veli palatini)

somatic motor ; pharynx ; palate

Regarding CN X: the 1st order cell bodies for SOMATIC SENSORY from the EAR are where?

superior ganglion of CN X

a LMN lesion of CN X will cause the uvula to point ______ from the lesion

AWAY (contralaterally)

Regarding the SOMATIC MOTOR pathway of CN X: axons of UMNs form corticobulbar tract that projects __________to LMNs in the

bilaterally ; nucleus ambiguous

Regarding the GAG REFLEX pathway of CN X:

Regarding the SOMATIC SENSORY pathway of CN X: the 1st order cell bodies are in the

superior ganglion of CN X

Regarding the VISCERAL MOTOR pathway of CN X: Fibers exit and travel as part of CN X until it reaches the wall of the target organ where it synapses on an _____________ composed of _________ neurons

intramural ganglion ; PostGPS

CN X carries the main VISCERAL MOTOR (parasympathetics) innervation to what places

thoracic & abdominal viscera (except hindgut)

the superior laryngeal nerve divides into what 2 nerves

internal laryngeal nerve external laryngeal nerve

Regarding the taste pathways of CN X: this is a _______ pathway

ipsilateral

Regarding the TASTE pathway of CN X: Axons from solitary nucleus project ___________ to VPM of thalamus

ipsilaterally

Regarding the taste pathways of CN X: the axons project through the

solitary tract

CN X carries the main SOMATIC MOTOR innervation to the muscles of what 3 places include exceptions

muscles of larynx muscles of pharynx (except stylopharyngeus) muscles of palate (except tensor veli palatini)

Regarding the SOMATIC SENSORY pathway of CN X: the 3rd order neurons are in the _________ and project to the

VPM of the thalamus ; inferolateral postcentral gyrus

the meningeal nerve carries ________ from ________

Somatic sensory from meninges

Regarding the VISCERAL SENSORY pathway of CN X: Fibers travel to 2nd order cell bodies in the _______-

solitary nucleus

Regarding the VISCERAL SENSORY pathway of CN X: the 1st order cell bodies are in the

inferior (nodose) ganglion of CN X

Regarding the GAG REFLEX pathway of CN X: Fibers from solitary nucleus & spinal trigeminal nucleus project to the

nucleus ambiguous

Regarding the taste pathways of CN X: the 1st order cell bodies for CN X are in the

inferior (nodose) ganglion of CN X

Regarding CN X The PreGPS cell bodies to the thoracic and abdominal viscera are in the

dorsal motor nucleus

Regarding the GAG REFLEX pathway of CN X: the sensory limb is CN

Regarding the taste pathways of CN X: the 1st order cell bodies for CN VII are in the

geniculate ganglion

Regarding the taste pathways of CN X: the 3rd order cell bodies are in the

VPM

Regarding the VISCERAL MOTOR pathway of CN X: PreGPS cell bodies are located in the

dorsal vagal nucleus

Regarding the VISCERAL SENSORY pathway of CN X: Axons from solitary nucleus project to what 4 places

nucleus ambiguous (cough reflex) hypothalamus reticular formation dorsal vagal nucleus

Regarding the SOMATIC SENSORY pathway of CN X: the fibers synapse on 2nd order cell bodies located in the

spinal trigeminal nucleus

CN X carries the main SOMATIC SENSORY innervation to what 3 places

External surface tympanic membrane, external auditory canal, meninges

Regarding the taste pathways of CN X: the 3rd order cell body axons project to the ________ & _________

gustatory cortex ; insula

Regarding CN X: the 2nd order cell bodies for TASTE & VISCERAL SENSORY are where?

nucleus solitarius/solitary nucleus

Regarding the TASTE pathway of CN X: Axons from VPM project to ____________ and _________

gustatory cortex ; insula

Regarding the taste pathways of CN X: the 2nd order cell bodies are in the

solitary nucleus

Regarding the SOMATIC MOTOR pathway of CN X: the UMNs are in the

inferolateral precentral gyrus

the internal laryngeal nerve carries _________ to vestibule of ______ and ________

visceral sensory ; larynx ; laryngopharynx