Medulla

Question 1

GSA (vagus)

Answer 1

General sensory information from the outer ear. synapses at the spinal trigeminal nucleus

Question 2

GVA (vagus)

Answer 2

from thoracic and abdominal viscera; mucous membranes of larynx; laryngeal pharynx. synapses at solitary nucleus

Question 3

SVA (vagus)

Answer 3

from taste buds of epiglottis. synapses at solitary nucleus

Question 4

GVE (vagus)

Answer 4

parasympathetic to thoracic and abdominal viscera. travels to the dorsal mortor nucleus X
parasympathetic to heart travels to nucleus ambiguus

Question 5

SVE (vagus)

Answer 5

branchial motor to the muscles of the larynx and pharynx synapses at nucleus ambiguus

Question 6

gag reflex

Answer 6

afferent: glossopharyngeal by the solitary nucleus
efferent: vagus by the nucleus ambiguus

Question 7

GSA (IX)

Answer 7

from skin of outer ear. synapses at the spinal trigeminal nucleus

Question 8

GVA (IX)

Answer 8

from mucosa of pharynx, medial surface of the ear drum, carotid body and sinus. synapses at the solitary nucleus
from pharynx and posterior tongue. synapses at the spinal trigeminal nucleus

Question 9

SVA (IX)

Answer 9

from taste buds on posterior third of tongue. synapses at the solitary nucleus

Question 10

GVE (IX)

Answer 10

from inferior salivatory nucleus: parasympathetics to the otic ganglion and parotid gland via the lesser petrosal nerve

Question 11

SVE (IX)

Answer 11

from nucleus ambiguus: branchial motor to stylopharyngeus

Question 12

internal arcuate fibers

Answer 12

impt. for DCML pathway

Question 13

decussation of the pyramids

Answer 13

LCST

Question 14

area postrema

Answer 14

circumventricular organ, emetic chemoreceptor

Question 15

medullary reticular formation

Answer 15

arousal from sleep

Question 16

raphe nuclei

Answer 16

serotonin production

Question 17

inferior olivary nucleus

Answer 17

cerebellar system

Question 18

descending sympathetics

Answer 18

from hypothalamus

Question 19

corticobulbar fibers

Answer 19

to motor CN nuclei