Pns 7: Cn Ix, X

Front 1

rootlets of CN IX (glossopharyngeal n.) emerge from the medulla btw the ___ and the _____

Back 1

olive and the inferior cerebellar peduncle

Front 2

CN IX exist the cranial cavity thru ____

Back 2

jugular foramen

Front 3

CN components of CN IX are (5)

Back 3

1. GSA
2. SVA
3. GVA
4. GVE
5. SVE

Front 4

cell bodies of all sensory neurons in CN IX (___, ____, ____) are located in the ______ located just above and below jugular foramen

Back 4

GSA, GVA, SVA

superior + inferior ganglia of CN IX

Front 5

SVA fibers of CN IX project to ____
GVA fibers of CN IX project to ____
GSA fibers of CN IX project to ____

Back 5

solitary nucleus (rostral)
solitary nucleus (caudal)
spinal trigeminal nucleus

Front 6

the lower motor SVE (CN IX) neuron cell bodies are found in the _____ of the medulla

Back 6

Nucleus Ambiguus

Front 7

preganglionic parasympathetic neuron (GVE of CN IX) are located in the ______ of the medulla

Back 7

inferior salivary nucleus

Front 8

branches of CN IX (6)

Back 8

Tympanic N.
N. of the Carotid Sinus (N. of Hering)
Pharyngeal branches
Branch of Stylopharyngeus
Tonsillar branches
Lingual branches

Front 9

before descending into the deep neck by coursing posterior to the styloid process, CN IX gives off the _____ and ____ nerves

Back 9

tympanic and carotid sinus nerves

Front 10

_____ re-enters the temporal via tympanic canaliculus and ramifies to form the ____ in the tympanic cavity. Tympanic n. then the gives off ____ upon exiting the tympanic cavity.

Back 10

tympanic nerve
tympanic plexus
lesser petrosal n.

Front 11

tympanic n. lesion cause ...
why?

Back 11

pain of middle ear since the nerve innervate the tympanic cavity and eustachian tube

Front 12

lesser petrosal n. of CN IX carries what type of fibers?

Back 12

carries parasympathetics fibers

Front 13

afferent branches of tympanic plexus innervate the mucosa lining: 3 area

Back 13

tympanic cavity, auditory tube, mastoid air cells

Front 14

tympanic and lesser petrosal n. mediate pain of _______

Back 14

ottis media (middle ear infection)

Front 15

the lesser petrosal nerve carries preganglionic parasympathetic fibers (___) to the _______.

Back 15

GVE
Otic ganglion

Front 16

CN IX
preganglionic nerve bodies are @ ____ of medulla. lesser petrosal n. from tympanic n. synapses @ ______ ganglion. postganglionic parasympathetic fibers accompany _____ and innervate _____ gland.

Back 16

inferior salivary nucleus
otic ganglion
auriculo-temporal n. - CN V3
parotid gland

Front 17

Frey's syndrome

Back 17

gustatory sweating post-parotid surgery. sweat when smells food. wrong crossing of fibers btw sympathetics and parasympathetics)

Front 18

carotid sinus nerve contain ___ fibers and innervate ________ and ______.

Back 18

GVA

baroreceptors in the carotid sinus
chemoreceptors in the carotid body

Front 19

a lesion of carotid sinus n. induce what?

Back 19

induce fluctuation in the arterial BP and HR.

Front 20

multiple ________ unite with branches of _______ n. to form the pharyngeal plexus near the middle pharyngeal constrictor

Back 20

pharyngeal branches
vagus n.

Front 21

pharyngeal branches from CN IX supply sensory to _______ and mediate the __________.

Back 21

oropharyngeal mucosa (including pharyngeal isthmus and posterior 1/3 of tongue)

afferent limb of the gag reflex

Front 22

to test the integrity of CN IX what reflex is tested?

Back 22

gag reflex

Front 23

stimulation of gag reflex produces 2 effects

Back 23

produces soft palate elevation and pharyngeal constriction

Front 24

muscular branch of CN IX innervate what muscle, derived form the 3rd pharygneal arch muscle

Back 24

stylopharyngeus m.

Front 25

during tonsillectomy what nerves may be injured?

Back 25

tonsilar and lingual branches of CN IX

Front 26

tonsillectomy eliminate sensation from ________

Back 26

posterior 1/3 of the tongue

Front 27

what nerve supplies the palatine tonsil, fauces and soft palate (GSA)?

Back 27

tonsilar branch of CN IX

Front 28

what 1 pair of nerve transmit general (GSA) and special (SVA) sensation from the posterior 1/3 of the tongue.

Back 28

lingual branch

Front 29

posterior 1/3 of the tongue lacks _____ but have _____

Back 29

lacks small papillae but have lingual tonsil

Front 30

Vagus n. leaves ____ from the _______ by multiple rootlets

Back 30

medulla from postolivary sulcus

Front 31

CN Xare joined by fibers of ________ arising from nucleus ambiguus at the jugular formane

Back 31

cranial roots of CN XI

Front 32

CN functional components of CN X

Back 32

SVE
SVA
GSA
GVA
GVE

Front 33

SVE fibers of CN X arise from ______
GVE fibers of CN X arise from ______

Back 33

nucleus of ambiguus
dorsal vagal nucleus

Front 34

_____ and _____ ganglia of CN X are exclusive sensory

Back 34

superior (jugular) and inferior (nodose) ganglia

Front 35

______ ganglia of CN X are concerned with somatic sensation. _____ ganglia of CN X is concerned with visceral snesation.

Back 35

jugular ganglia

nodose ganglia

Front 36

SVE fiber of CN X innervates ______ and _______ derived from the 4th and 6th pharyngeal arches

Back 36

pharyngeal and laryngeal musculature

Front 37

3 main branches of CN X that distribute SVE fibers are:

Back 37

pharyngeal n
superior laryngeal n
recurrent (inferior) laryngeal n.

Front 38

pharygeal n. of CN X joins ______ to from the pharyngeal plexus

Back 38

CN IX

Front 39

the pharyngeal n. innervates most of ______ and ______ musculature except ______ and _____ which are innervated by CN ___ and CN ___, respectively.

Back 39

pharyngeal and palatal musculature

stylopharyngeus innervated by CN IX
tensor veli palatini innervated by CN V3

Front 40

unilateral vagal lesions commonly result in __________. involvement of constrictor m. may result in ______. Paralysis of the ipsilateral ________m results in asymmetry in palatal elevation during phonation, swallowing or laryngoscopy. patient experiences ____ and ____ of liquid.

Back 40

abnormal gag

dysphagia

levator veli palatini

nasal speech and nasal reflux of liquid

Front 41

_______ branch of __________ n. innervates _______, a laryngeal musculature

Back 41

external branch of the superior laryngeal n.

cricothyroid m.

Front 42

superior laryngeal n. gives off

Back 42

external laryngeal n. and internal laryngeal n.

Front 43

recurrent layngeal nerve innervate__________ except _____.

Back 43

intrinsic laryngeal muscles except cricothyroid

Front 44

injury of external branch of superior laryngeal n. and recurrent laryngeal n. result in ______ paresis or paralysis of the muscle that they innervate, producing ......

Back 44

ipsilateral paresis

rough raspy hoarseness and a less mobile or fixed vocal cord

Front 45

the R and L recurrent laryngeal n. wraps around ______ and _____, respectively. This is due to developmental reasons.

Back 45

R recurrent laryngeal n. wraps around subclavian artery

L recurrent laryngeal n. wraps around the aortic arch

Front 46

Both R and L recurrent laryngeal n. are vulnerable to

Back 46

pathology or excision of the thyroid

Front 47

L recurrent laryngeal n. is vulnerable to ....

Back 47

mediastinal or pulmonary pathology

Front 48

recurrent (inferior) laryngeal n. include 3 branches

Back 48

tracheal and esophageal branches
pharyngeal branches

Front 49

Vagal afferents are mediated by

Back 49

auricular and meningeal branches of CN X

Front 50

_________ branch of CN X enters the the temporal bone thru _________ and emerges from the the temporal bone thru ________ fissure

Back 50

auricular branch of CN X
thru mastoid canaliculus
tympanomastoid fissure

Front 51

auricular brannch of CN X is the only ________ of the Vagus

Back 51

cutaneous branch

Front 52

auricular branch of CN X mediates the pain of _______, result from bacterial infection following loss of ______

Back 52

otitis externa (aka swimmer's ear)
cerumen

Front 53

"ear cough" reflex resulted from

Back 53

stimulation of CN X when things stimulate the eustachian tube.

Front 54

auricular branch of CN X innervates mucosa lining the _______ and ________ and skin lining the ____ and _____

Back 54

valleculae and piriform recesses

outer ear and ear canal

Front 55

internal branch of the superior laryngeal n. pieces ________ membrane and innervates mucosa of the _________ and mediates the _____ reflex

Back 55

thyroidhyoid membrane

suraglottic larynx

afferent limb of the cough reflex

Front 56

what CN's provide sensory innervation to these pharynx regions:
1. nasopharyx
2. oropharynx
3. laryngopharynx

Back 56

1. V2
2. IX
3. X

Front 57

SVA fibers mediate taste sensation from _______ and ________ via _______ of superior laryngeal n. (CN X)

Back 57

epiglottis and valleculae

internal laryngeal n.

Front 58

Internal laryngeal n. of CN X project to _______

Back 58

solitary nucleus

Front 59

GVA fibers of CN X convey sensations of _______ and physiologic sensation arising from _______ of GI tract, respiratory structures and bladders, baroreceptors in arteries. Also _________ (changes in partial pressure in the blood, blood pH, and H+ in the stomach).

Back 59

visceral pain

mechanoreceptors

chemoreceptors

Front 60

GVE fiber of vagus nerve originate from _________ of medulla, synapses at ___________ ganglia and innervates at 8 regions

Back 60

dorsal motor nucleus of vagus

terminal (enteric) ganglia

1. heart and lungs
2. gut, pancreas, biliary tree
3. mucosa pf larynx and pharynx

Front 61

CN X courses thru the deep neck within ______.

Back 61

carotid sheath

Front 62

the vagus n. gives rise to branches to ______ and _____ plexus in the mediastinum.

Back 62

carotid plexus and pulmonary plexus

Front 63

parasympathetic vagal inputs of pulmonary plexus facilitate contract of sooth muscle which _________

Back 63

constricts the branchial tubes

Front 64

________ is located on the underside of the aortic arch
________ is located on the tracheal bifurcation

Back 64

superficial cardiac plexus
deep cardiac plexus

Front 65

preganglionic vagal cardiac fibers synpase in the small ganglia along ______

Back 65

coronary arteries

Front 66

parasympathetic inputs to the cardiac plexus result in the following:

Back 66

1. deceleration of HR
2. reduction in strength of myocardial contraction
3. vasoconstriction of coronary arteries

Front 67

_______ is formed by vagal and sympathetic fibers along the esophagus in the posterior mediastinum

Back 67

esophageal plexus

Front 68

As esophageal plexus approach the diaphragm and abdomen, the vagal fibers reconstitute as _____ and ___________ which pass thru the esophageal hiatus

Back 68

anterior and posterior vagal trunk

Front 69

upon entering the abdomen, the vagal trunk provide ___________ innervation to abdominal viscera derived from the ___________ and _______. These fibers will synapse in ganglia of the ________ and ________ of the gut.

Back 69

preganglionic parasympathetic

embryonic foregut and midgut

myenteric and submucosal plexuses

Front 70

myenteric and submucosal plexuses functions to

Back 70

1. inhibit contraction of sphincters
2. stimulate glandular secretions
3. stimulate contraction of smooth GI muscle promoting peristalsis

Front 71

foregut consists of

Back 71

stomach, liver, gallbladder, pancreas, spleen, 1st half of dupdenum

Front 72

midgut consists of

Back 72

2nd half of duodenum -> 2/3 of transverse colon