Gustatory Pathways

Question 1

Anterior 2/3 tongue touch/temp

Answer 1

trigeminal

Question 2

Posterior 1/3 tongue touch/temp/taste

Answer 2

glossopharyngeal

Question 3

Anterior 2/3 tongue taste

Answer 3

facial

Question 4

Taste epiglotis/larynx

Answer 4

vagus

Question 5

Solidary tract

Answer 5

taste sensation fibers

Question 6

Solitary tract CN

Answer 6

VII, IX, X

Question 7

What nerve senses for gag reflex?

Answer 7

IX

Question 8

Motor for gag reflex?

Answer 8

X

Question 9

Post 1/3 tongue taste

Answer 9

glossopharyngeal

Question 10

1˚ gustatory afferents

Answer 10

from taste location to solitary tract nucleus

Question 11

2˚ gustatory afferents

Answer 11

from nucleus of solitary tract to 3 locations:

1. VPM
2. hypothalamus/amygdala
3. reticular formation

Question 12

3˚ gustatory afferents

Answer 12

VPM thalamus ==> insular cortex

Question 13

4˚ gustatory afferents

Answer 13

insular cortex ==> orbitofrontal cortex (integration)

Question 14

What is the function of involving the hypothalamus and amygdala in the gustatory pathway?

Answer 14

they give visceral information

Question 15

What does the reticular formation do for gustation?

Answer 15

coordinates chewing and swallowing pattern generators

Question 16

Gag reflex nucleus

Answer 16

nucleus ambiguus