CN X (vagus) (para)

Question 1

preganglionic cells are located in what nucleus of the vagus nerve?

Answer 1

posterior (dorsal) nucleus

Question 2

fibers descend in the vagus nerve to ultimately supply smooth muscles of what?

Answer 2

Smooth muscle of the bronchial tree, digestive tract, gall bladder and bile ducts, myocardium and the pancreas, liver and spleen

Question 3

Postganglionic cells are usually located in what?

Answer 3

organs supplied or blood vessels that supply the organs

Question 4

what are some abdominopelvic plexuses associated with the postganglionic vagus

Answer 4

Myocardium, submucosal plexus and myenteric plexus

Question 5

what is another name for the submucosal plexus

Answer 5

meissners plexus

Question 6

what is another name for the myenteric plexus

Answer 6

auerbachs plexus

Question 7

when going to the heart preganglionic fibers are carried in what nerves

Answer 7

superior and inferior cardiac nerves

Question 8

when going to the heart preganglionic fibers will synapse in what plexus ate the base of the heart and the wall of the heart

Answer 8

cardiac plexus

Question 9

postganglionic fibers are carried to what structures in the heart

Answer 9

1. sinuatrial node
2. atrioventrucular node
3. atrioventricular bundle to reach the subendocardial branches (purkinje fibers)

Question 10

parasympathetic impulses will inhibit what and constrict what of the heart?

Answer 10

inhibit the myocardium and constrict the coronary arteries

Question 11

going to the lungs preganglionic fibers are carried in what two branches

Answer 11

anterior and posterior bronchial branches

Question 12

preganglionic fibers going to the lung will synapse in what plexuses surrounding the bronchial tree

Answer 12

the pulmonary plexuses

Question 13

postganglionic fibers will reach what structures

Answer 13

bronchial musculature and bronchial glands

Question 14

parasympathetic impulses in regards to the lungs will result in what of the bronchial tree and what of the bronchial glands

Answer 14

constriction of the bronchial tree and increase secretion of the bronchial glands

Question 15

when heading to the esophagus preganglionic fibers are carried in what nerves?

Answer 15

recurrent laryngeal nerves as well as the anterior and posterior esophageal branches

Question 16

preganglionic fibers heading to the esophagus will synapse where?

Answer 16

in the wall of the esophagus

Question 17

postganglionic fibers will the supply what of the esophagus?

Answer 17

smooth muscle fibers of the esophagus

Question 18

the upper 1/3 of the esophagus’ muscular layer is skeletal muscle and is innervated by what?

Answer 18

the recurrent laryngeal nerve

Question 19

when the preganglionic fibers are headed to the stomach by way of what branches?

Answer 19

~4 branches from the anterior vagal trunk

~6 branches from the posterior vagal trunks

Question 20

when headed to the stomach preganglionic fibers will synapse in which two plexuses of the wall of the stomach

Answer 20

the submucosal (meissner’s) and the myenteric (auerbach’s) plexuses

Question 21

From the plexuses in the wall of the stomach postganglionic axons will reach what?

Answer 21

smooth muscle fibers of the stomach

Question 22

in the stomach parasympathetic stimulation results in contraction of what and secretion of what?

Answer 22

contraction of smooth muscle of the stomach and secretion of gastric juices

Question 23

Preganglionic fibers will travel to the SI, cecum, vermiform appendix, nd ascending and transverse colon by way of what?

Answer 23

posterior vagal trunk

Question 24

Preganglionic fibers reach the duodenum via what?

Answer 24

the celiac plexus

Question 25

after innervating the duodenum through the celiac plexus the remaining preganglionic fibers reach their destinations by traveling through which plexuses?

Answer 25

the celiac plexus and continuing through the superior mesenteric plexus

Question 26

fibers will synapse where when going to the SI, cecum, vermiform appendix and ascending and descending colon

Answer 26

in the submucosal and myenteric plexus

Question 27

postganglionic axons will reach what from the submucosal and myenteric plexuses?

Answer 27

smooth muscle fibers

Question 28

parasympathetic stimulation results in what when referring to the SI, cecum, vermiform appendix and ascending and transverse colon

Answer 28

contraction of the smooth muscle and it is also secretomotor for intestinal glands

Question 29

visceral afferents of the vermiform appendix are usually what time of receptors

Answer 29

nociceptors

Question 30

when heading to the gallbladder, pancreas and biliary tree preganglionic fibers use what nerves

Answer 30

hepatic branches and right vagal trunk

Question 31

preganglionic fibers heading to the gall bladder, pancreas and biliary tree reach these structures by way of what plexus?

Answer 31

the hepatic plexus

Question 32

the hepatic plexus is an extension of what?

Answer 32

celiac plexus

Question 33

preganglionic fibers heading to the gall bladder, pancreas and biliary tree will synapse where?

Answer 33

muscular walls of the gall bladder and biliary tree and in the glandular tissue of the pancreas

Question 34

postganglionic fibers reach what of their intended targets when going to the gall bladder, pancreas and biliary tree

Answer 34

smooth muscle fibers or glands of their intended target

Question 35

parasympathetic stimulation increases what activity in the gall bladder and biliary tree?

Answer 35

increases smooth muscle fibers

Question 36

parasympathetic stimulation is what for the pancreatic glands?

Answer 36

it is secretomotor

Question 37

when heading to the spleen preganglionic fibers will travel from what trunk by way of what plexus?

Answer 37

posterior vagal trunk by way of the splenic plexus

Question 38

the splenic plexus is an extension of what?

Answer 38

the celiac plexus

Question 39

when heading to the kidneys preganglionic fibers reach them through what?

Answer 39

through the renal plexus from the posterior vagal trunk

Question 40

the motor supply to the kidneys is strictly what?

Answer 40

sympathetic

Question 41

since all motor supply to the kidneys is strictly sympathetic any fibers reaching the kidney via parasympathetic pathway are likely way?

Answer 41

visceral afferents

Question 42

where would cell bodies be found referring to the parasympathetic visceral afferents heading to the kidneys?

Answer 42

in the inferior ganglion

Question 43

when heading to the liver preganglionic fibers are friarly from what trunk?

Answer 43

primarily the anterior vagal trunk, with some from the posterior vagal trunk

Question 44

preganglionic fibers reach the liver via what plexus?

Answer 44

the hepatic plexus, an extension of the celiac plexus

Question 45

like the kidneys, parasympathetic supply to the liver is likely what?

Answer 45

primarily visceral afferent

Question 46

when heading to the suprarenal glands, similar to the kidneys and liver, vagal supply to the suprarenal glands is what?

Answer 46

Primarily visceral afferent

Question 47

visceral afferents heading to the suprarenal glands get there by way of what?

Answer 47

Posterior vagal trunk