unit 7: CN para pathways

Question 1

the PREganglionic CB of the oculomotor n. are located in the __ __ nucleus, within the midbrain, in the ___ ___

Answer 1

accessory oculomotor

periaqueductal gray

Question 2

oculomotor PREganglionic fibers follow the path of the oculomotor into the orbit and synapse in the __ ganglion

Answer 2

ciliary

Question 3

oculomotor POSTganglionic axons are carried in __ __ nerves and enter the eyball to supply the ___ muscle and __ __

Answer 3

short ciliary
ciliary (contract, convex lens, focus closer)
sphincter pupillae (contract, decrease pupil size)

Question 4

location of facial nerve PREganglionic CB

Answer 4

salivary nucleus (superior)

Question 5

preganglionic fibers exit the CNS in the intermediate nerve and are carried in these two branches of the facial nerve:

Answer 5

greater petrosal nerve

chorda tympani

Question 6

• greater petrosal n. leaves facial n. at the __ ganglion and carries PREganglionic PARA fibers anteriorward thru the ____ for the greater petrosal n.
• re-enters petrous part of temporal bone thru the __ __, travels in the pterygoid canal, ultimately joins the ____ ganglion

Answer 6

geniculate
hiatus
foramen lucerum
pterygopalatine

Question 7

POSTganglionic fibers from the greater petrosal are distrubuted in the __ and __ nerves to reach the lacrimal, nasal, palatine and pharyngeal glands

Answer 7

lacrimal

pterygopalatine

Question 8

• chorda tympani carries PREganglionic PARA fibers thru the tympanic cavity, exits temporal bone thru the __ __
• then combines with ____ nerve, from the mandibular division of the trigeminal, before leaving to reach the ___ ganglion

Answer 8

pterygotympanic fissure
lingual
submandibular

Question 9

POSTganglionic fibers from the chorda tympani travel to __ and ___ glands, as well as glands in the mucous membranes of the oral cavity, lingual glands on anterior part of tongue

Answer 9

submandibular

sublingual

Question 10

location of the PREganglionic CB of teh glossopharyngeal nerve

Answer 10

salivary nucleus (inferior)

Question 11

• glossopharyngeal preganglionic fibers are carried in the ___ nerve, off the glossopharyngeal at the inferior ganglion
• fibers are carried thru the __ __ into the tympanic cavity

Answer 11

tympanic

tympanic canaliculus

Question 12

• in the tympanic cavity, the glossopharyngeal nerve receives POSTganglionic symp fibers from the __ __ ganglion to form the tympanic plexus
• PREganglionic PARA fibers pass thru the plexus and reform as the __ __ nerve, which travels thru the lesser petrosal canal to the __ ganglion

Answer 12

superior cervical
lesser petrosal
otic

Question 13

(glossopharyngeal) POSTganglionic PARA fibers from the otic ganglion are carried to the __ and posterior __ glands

Answer 13

parotid

lingual

Question 14

glossopharyngeal postganglionic PARA fibers reach the PAROTID gland via the ___ nerve, from the mandibular division of the trigeminal

Answer 14

auriculotemporal

Question 15

the posterior lingual glands get POSTganglionif fibers via the __ branch of the glossopharyngeal nerve

Answer 15

lingual

Question 16

• ___ (special sensory) fibers are carried in the lingual branch of the glossopharyngeal
• other visceral afferents are carried in the carotid sinus branch from ___ in the carotid SINUS and ___ in the carotid BODY

Answer 16

taste
baroreceptors
chemoreceptors

Question 17

(vagus) PREganglionic CB are located in the:

Answer 17

posterior (dorsal) nucleus of the vagus

Question 18

preganglionic fibers descend in the vagus to ultimately supply __ __ of the bronchial tree, digest tract, gall bladder and bile ducts, myocardium as well as to the pancreas, liver and spleen

Answer 18

smooth muscle

Question 19

POSTganglionic (vagus) cells are usually located in the organs supplied or BV that supply the organs such as (3):

Answer 19

myocardium
submucosal plexus
myenteric plexus

Question 20

in pway to the heart, PREganglionic fibers are carried in the superior and inferior ___ nerves, and synapse in the __ __ at the base and wall of heart

Answer 20

cardiac

cardiac plexus

Question 21

POSTganglionic heart fibers are carried to (3):

Answer 21

sinoatrial node
atrioventricular node
atrioventricular bundle (to reach subendocardial branches/purkinje fibers)

Question 22

PARA impulses of the heart will ___ the myocardium and ___ the coronary arteries

Answer 22

inhibit

constrict

Question 23

for pway to the lungs, PREganglionic fibes are carried in the ANT & POST ___ branches, to synapse in the ___ __ surrounding the bronchial tree

Answer 23

bronchial

pulmonary plexuses

Question 24

POSTganglionic lung fibers reach bronchial __ & bronchial __

Answer 24

musculature

glands

Question 25

PARA impulses result in ___ of bronchial tree and __ secretions of bronchial glands

Answer 25

constriction | increase

Question 26

in pway to the esophagus, PREganglionic fibers are carried in the __ __ nerves as well as the anterior and posterior __ branches, to synapse in the WALL of the esophagus

Answer 26

recurrent laryngeal | esophageal

Question 27

POSTganglionic esophagus fibers supply the __ __ fibers of the (LOWER 2/3) -upper 1/3 is skeletal musc supplied by recurrent laryngeal

Answer 27

smooth muscle

Question 28

PREganglionic stomach fibers reach it via branches from both the ANT (4 branches) and POST (6 br) vagal trunks to synapse in the ___ and __ plexuses in the stomach wall -SI, cecum, appendix, ascending/transverse colon also synapse here

Answer 28

submucosal | myenteric

Question 29

POSTganglionic stomach axons reach __ __ fibers from the submucosal and myenteric plexuses

Answer 29

smooth muscle

Question 30

PARA stim of stomach results in __ of smooth muscle and __ of gastric juices

Answer 30

contraction | secretion

Question 31

PREganglionic fibers reach the SI, cecum, vermiform appendix, ascending/transverse colon via the posterior ___ trunk - fibers to duodenum do so via the __ __ - others are via the cardiac plexus and continuing thru the __ __ plexus

Answer 31

vagal celiac plexus superior mesenteric

Question 32

POSTganglionic intestinal/digestive axons reach _ _ fibers from the celiac, submucosal, and myenteric plexuses

Answer 32

smooth muscle

Question 33

PARA stim of digestive organs results in ___ of smooth muscle and is ___ for intestinal GLANDS

Answer 33

contraction | secretomotor

Question 34

PREganglionic fibers to the gallbladder, pancreas, biliary tree are primarily from the HEPATIC branch of the right vagal trunk, and reach the organs via the __ plexus, off the celiac plexus -synapse on __ walls of gall bladder and biliary tree, and in the __ tissue of the pancreas

Answer 34

hepatic muscular glandular

Question 35

PARA stim increases smooth musc activity in the gall baldder and biliary vessels and is ___ for the pancreatic glands

Answer 35

secretomotor

Question 36

PREganglionic fibers reach the spleen from the posterior vagal trunk via the __ plexus, an extension of the celiac plexus

Answer 36

splenic

Question 37

fibers reach the kidneys thru the ___ plexus, from the posterior vagus

Answer 37

renal

Question 38

the kidney's MOTOR supply is strictly sympathetic, so any fibers reaching the kidney via PARA are likely __ ___ -CB are located in the __ __ of the VAGUS

Answer 38

visceral afferents | inferior ganglion

Question 39

PREganglionic fibers to liver are primarily from the ANT vagal trunk (some post), and reach the liver via the __ plexus off the celiac -PARA supply to the liver is primarily ___

Answer 39

hepatic | afferent

Question 40

like the liver and kidneys, vagal supply the to suprarenal glands is ___ and those fibers are carried in the ___ vagal trunk

Answer 40

afferent | posterior