CN 2 - Herring Flashcards
Supplies somatic sensory from the posterior 1/3rd of the tongue & middle ear
CN IX
Supplies taste from posterior 1/3rd of the
tongue
CN IX
nerve that causes ear infection pain
CN IX
Supplies somatic motor innervation to 1 pharyngeal muscle
CN IX
PreGPS to the parotid gland
CN IX
Supplies visceral sensory (reflex) from the carotid body & sinus and oropharynx
CN IX
where are the lower motor neurons located in the somatic motor pathway for CN IX
nucleus ambiguous
what is the peripheral target for the CN IX in the somatic motor pathway
stylopharyngeus muscle
where are the preGPS cell bodies located in the PS pathway for CN IX
inferior salivary nucleus
what 2 structures do the preGPS fibers form in the PS pathway for IX
tympanic plexus
lesser petrosal n
where are the postGPS CBs located in the PS pathway for CN IX
Otic ganglion
the postGPS fibers hitch a ride on what CN in the PS pathway of CN IX
CN V3
what is the peripheral target of the PS pathway of CN IX
parotid gland
the 1st order neurons in the inferior ganglion of CN IX for the somatic sensory pathway of CN IX contribute to what
posterior 1/3 of tongue
the 1st order neurons in the superior ganglion of CN IX for the somatic sensory pathway of CN IX contribute to what
middle ear & inner aspect of tympanic membrane
In the somatic sensory pathway for CN IX, the central processes from ganglia project to 2nd order cell bodies in the
spinal trigeminal nucleus
In the somatic sensory pathway for CN IX, 2nd order CBs send their axons to 3rd order neurons in the
VPM of the thalamus
In the somatic sensory pathway for CN IX, 3rd order neurons send their axons to the
inferolateral postcentral gyrus
In the visceral sensory pathway for CN IX, the 1st order CBs in the inferior ganglion of CN IX contribute to what 3 things
carotid body
carotid sinus
oropharynx
In the visceral sensory pathway for CN IX, the central processes from ganglia project to 2nd order CBs in the
solitary nucleus
In the visceral sensory pathway for CN IX, the 2nd order CBs primarily projects fibers through ______ pathways
reflex
In the special sensory pathway for CN IX, the 1st order CBs in the inferior ganglion of CN IX have peripheral process that travel from ________ to inferior ganglion of CN IX
posterior 1/3 tongue
In the special sensory pathway for CN IX, central process from the inferior ganglion of CN IX project to 2nd order CBs in the
solitary nucleus
In the special sensory pathway for CN IX, 2nd order CBs send their axons to 3rd order neurons in the
VMP of the thalamus
In the special sensory pathway for CN IX, 3rd order neurons send their axons to the
Insula (gustatory cortex)
decreased gag reflex is due to a lesion of CN
IX
decreased pain, temperature, and touch form the posterior 1/3 of the tongue is due to a lesion to CN
IX
variable presentation of abnormal taste is due to a lesion of CN
IX
PreGPS to the thoracic & abdominal viscera (up
to the left colic flexure)
CN X
Supplies visceral sensory (reflex) from the larynx, pharynx, thorax, & abdomen
CN X
Supplies somatic motor innervation to the muscles of the larynx, most of the palatal muscles, & most of the pharyngeal muscles
CN X
Supplies somatic sensory to portions of the external ear & tympanic membrane
CN X
Supplies taste from the epiglottis
CN X
In the PS pathway for CN X, the preGPS CBs are in the
DVMN
In the PS pathway for CN X, the preGPS fibers send their axons to CN
CN X
In the PS pathway for CN X, the postGPS CBs live in the
wall of the target organ
In the PS pathway for CN X, the postGPS fibers live in the
wall of the target organ
In the PS pathway for CN X, the peripheral targets are the
thoracic & abdominal viscera (up to the left colic flexure)
In the visceral sensory pathway for CN X, the 1st order CBs are in the inferior (nodose) ganglion of CN X which contribute to what 4 things
laryngopharynx
larynx
thorax
abdomen
In the visceral sensory pathway for CN X, central processes from ganglia project to 2nd order CBs in the
solitary nucleus
In the visceral sensory pathway for CN X, the 2nd order CBs in the solitary nucleus primarily protect fibers through ______ pathways
reflex
In the somatic motor pathway for CN X, where are the lower motor neurons located
nucleus ambiguous
In the visceral sensory pathway for CN X, axons of LMNs pass through what into the neck
jugular foramen
In the visceral sensory pathway for CN X, what are the peripheral targets
Pharyngeal MM. (except for stylopharyngeus M)
Laryngeal MM.
Most Palatal MM.
In the somatic sensory pathway for CN X, the 1st order CBs in the superior ganglion contribute to what 2 things
external ear
tympanic membrane
In the somatic sensory pathway for CN X, central processes from ganglia project to 2nd order CBs in the
spinal trigeminal nucleus
In the somatic sensory pathway for CN X, 2nd order CBs send their axons to 3rd order neurons in the
VPM of the thalamus
In the somatic sensory pathway for CN X, 3rd order neurons send their axons to the
inferolateral postcentral gyrus
In the special sensory for taste pathway for CN X, 1st order CBs are where
inferior (nodose) ganglion of CN X
In the special sensory pathway for CN X, peripheral processes of 1st order CBs travel from the ______ to inferior ganglion of CN X
epiglottis
In the special sensory pathway for CN X, central processes project to 2nd order CBs in the
solitary nucleus
In the special sensory pathway for CN X, 2nd order CBs send their axons to 3rd order neurons in the
VPM of the thalamus
In the special sensory pathway for CN X, 3rd order neurons send their axons to the
insula (gustatory cortex)
sagging of soft palate on ipsilateral side is due a lesion from CN
X
uvula deviated to normal (contralateral) side can be due to a lesion of CN
X
hoarseness can be due to a lesion of CN
X
which CNs can contribute to dysphagia (difficulty swallowing)
V, VII, IX, X, or XII
In the somatic motor pathway for CN XI, axons project
bilaterally
In the somatic motor pathway for CN XI, LMNs are where
accessory nucleus (ventral horn of the upper 5 cervical levels)
In the somatic motor pathway for CN XI, axons of LMNs enter the cranial cavity via
foramen magnum
In the somatic motor pathway for CN XI, axons of LMNs exit the cranial cavity via
jugular foramen
In the somatic motor pathway for CN XI, what are the peripheral targets
trapezius
SCM
Weakness of shoulder elevation on ipsilateral side is due to a lesion of CN
XI
Weakness turning chin to opposite side is due to a lesion of CN
XI
In the somatic motor pathway for CN XII, UMNs project
contralaterally ONLY
In the somatic motor pathway for CN XII, LMNs are in the
hypoglossal nucleus
In the somatic motor pathway for CN XII, axons of LMNs pass through the ________ canal
hypoglossal
In the somatic motor pathway for CN XII, what are the peripheral targets
All intrinsic &
extrinsic muscles of the tongue EXCEPT palatoglossus muscle
Tongue projects to
contralateral side of lesion is due to a lesion of the _______ of CN
UMN of CN XII
Tongue projects to ipsilateral side of lesion due to a lesion of the _______ of CN
LMN of CN XII
atrophy of tongue over time is due to lesion of CN
XII
