Exam 2: CN 10

Question 1

Vagus nerve carries these types of fibers

Answer 1

Motor
Para
Sensory (taste)

Question 2

Vagus is the ____ cranial nerve and is the most important _____ nerve

Answer 2

Longest; para

Question 3

Motor fibers in vagus have cell bodies in the

Answer 3

Nucleus ambiguus

Question 4

The nucleus ambiguus receives info from

Answer 4

Both cerebral hemispheres

Question 5

Pre para fibers arise from _____ nucleus of vagus

Answer 5

Posterior (dorsal)

Question 6

The posterior nucleus of vagus receives info indirectly from

Answer 6

Hypothalamus and carotid sinus

Question 7

Incoming somatic sensory info terminates in

Answer 7

Spinal nucleus of CN V

Question 8

Taste and viscerosensory info terminates in

Answer 8

Nucleus of solitary tract

Question 9

Two peripheral ganglia associated w/ vagus

Answer 9

Superior and inferior

Question 10

Superior ganglion AKA

Answer 10

Jugular ganglion

Question 11

Inferior ganglion AKA

Answer 11

Nodose ganglion

Question 12

Somatosensory info carried in neurons w/ cell bodies in

Answer 12

Superior ganglion

Question 13

Sensory distribution of vagus

Answer 13

Dura
Auricle
External auditory canal
Lateral tympanic membrane
Oropharynx
Laryngopharynx

Question 14

Sensory info is carried to _____

Answer 14

Spinal nucleus of trigeminal nerve

Question 15

Taste from epiglottis is carried to _____ by neurons located in inferior ganglion

Answer 15

Superior part of nucleus of solitary tract

Question 16

Visceral sensory info carried to _____ by neurons in inferior ganglion

Answer 16

Inferior part of nucleus for solitary tract

Question 17

Vagus nerve carries visceral sensory info from

Answer 17

Larynx
Laryngopharynx
Viscera in thoracic and abdominal cavities
Baroreceptors in aortic arch
Chemoreceptors in para-aortic body

Question 18

Vagus nerve emerges from _____ as a series of ____

Answer 18

Lateral aspect of MO; rootlets

Question 19

Vagus exits skull through

Answer 19

Jugular foramen

Question 20

Branch given off before exiting skull

Answer 20

Meningeal branch

Question 21

Meningeal branch supplies

Answer 21

Dura of posterior cranial fossa

Question 22

Jugular foramen compartmentalized by a

Answer 22

Fibrous septum

Question 23

What nerves travel anterior to the septum

Answer 23

Vagus and accessory

Question 24

What nerves travel posterior to septum

Answer 24

Glossopharyngeal N

Question 25

Superior ganglion is located in the ____ while the inferior ganglion is located ____

Answer 25

Jugular foramen; just inferior to jugular foramen

Question 26

Auricular branch given off at the

Answer 26

Superior ganglion

Question 27

Auricular branch courses through _____ and ____ to reach EAM

Answer 27

Mastoid canaliculus; tympanomastoid fissure

Question 28

auricular branch carries sensory info from

Answer 28

Meatus and small portion of auricle

Question 29

After jugular foramen, vagus nerve travels inferiorly w/in

Answer 29

Carotid sheath

Question 30

In carotid sheath vagus travels between

Answer 30

Internal carotid artery and internal jugular vein (above bifurcation) Common carotid (below bifurcation)

Question 31

Pharyngeal branch leaves at

Answer 31

Inferior ganglion

Question 32

Pharyngeal branch combines w/ fibers from _____ to form _____

Answer 32

Glossopharyngeal N and post sympathetic trunk; pharyngeal plexus

Question 33

Vagal fibers provide motor supply to

Answer 33

Pharyngeal constrictor muscles | Levator veli palatine

Question 34

Uvula deviates to which side if L vagus is affected

Answer 34

Right (deviates to normal side)

Question 35

Branches to carotid artery are given off of the

Answer 35

Inferior ganglion

Question 36

Chemoreceptors in carotid body carry info to

Answer 36

Inferior part of nucleus for solitary tract

Question 37

Superior laryngeal nerve divides into

Answer 37

Internal and external laryngeal nerves

Question 38

External laryngeal N motor supply to

Answer 38

Cricothyroid muscle

Question 39

Internal laryngeal N sensory from

Answer 39

Laryngeal mucosa down to vocal folds

Question 40

Recurrent laryngeal N motor supply to

Answer 40

All muscles of larynx EXCEPT cricothyroid

Question 41

Recurrent laryngeal N carries sensory info from

Answer 41

Larynx inferior to vocal folds

Question 42

L side recurrent laryngeal passes under the ____ and becomes

Answer 42

Aortic arch; inferior laryngeal N

Question 43

Inferior laryngeal N supplies

Answer 43

Laryngeal musculature

Question 44

R side recurrent laryngeal N passes posterior to ____

Answer 44

Subclavian artery

Question 45

Superior and inferior cardiac branches carry ____ info to cardiac plexus

Answer 45

Parasympathetic

Question 46

Superior cardiac branches leave vagus and travel w/

Answer 46

Great vessels to cardiac plexus

Question 47

Inferior cardiac branches are given off by the

Answer 47

Recurrent laryngeal N

Question 48

Anterior or posterior pulmonary plexus is larger

Answer 48

Posterior

Question 49

The R vagus passes ____ and the L vagus passes ____ over the esophagus contributing to esophageal plexus

Answer 49

Posteriorly; anteriorly

Question 50

The R vagus nerve enters the abdominal cavity thru the ___ and becomes ___

Answer 50

Esophageal opening; posterior vagal trunk

Question 51

Posterior vagal trunk plexuses

Answer 51

Celiac Superior mesenteric Renal

Question 52

Posterior vagal trunk supplies

Answer 52

``` Posterior stomach Duodenum Liver Kidneys SI Prox 2/3 LI ```

Question 53

L vagus becomes the

Answer 53

Anterior vagal trunk

Question 54

Anterior vagal trunk sends branches to

Answer 54

Stomach Liver Pancreas Superior duodenum

Question 55

Bilateral transection of vagus

Answer 55

Die

Question 56

Lesions w/in vault or close to skull

Answer 56

Probs w/ palata, pharynx and larynx

Question 57

Damage to recurrent laryngeal N

Answer 57

Hoarseness or dec volume of speech