Gustatory

Question 1

Taste cells are innervated by afferent gustatory neurons, whose fibers project into the CNS via what nerves?

Answer 1

CN VII, IX and X

Question 2

The cell bodies for the afferent gustatory neurons are located within what ganglia

Answer 2

geniculate, petrosal, and nodose ganglia

Question 3

Gustatory afferent fibers synapse within the gustatory region of the nucleus of the _______

Answer 3

solitary tract

Question 4

tastant identification is preserved through ________ of this sensory information

Answer 4

Labeled line transmission

Question 5

gustation: the sensation of taste, via detection of _____ in the foods and liquids that we ingest

Answer 5

tastants

Question 6

_____ which results from a combination of inputs from the gustatory, olfactory, and somatosensory systems

Answer 6

“flavor”

Question 7

Taste buds are clustered within ______ along the tongue

Answer 7

papillae

Question 8

Each taste bud contains _____ gustatory (taste) cells

Answer 8

50-150

Question 9

each gustatory cell presents receptors for _____

Answer 9

specific tastants

Question 10

each gustatory cell is innervated by a __________

Answer 10

gustatory neuron

Question 11

gustatory neuron, whose axon travels in Through what cranial nerve?

Answer 11

CNVII,IX, or CNX

Question 12

T/F gustatory cells are neurons

Answer 12

False

Question 13

T/F gustatory neurons are neurons

Answer 13

True

Question 14

In response to tastan results in release of ______ triggering action potential

Answer 14

neurotransmitter

Question 15

What kind of tissue are gustatory cells?

Answer 15

Modified epithelium,

Question 16

Gustatory cells can have receptors to which specific tastants serve as____

Answer 16

ligands

Question 17

Gustatory cells can have ____ that provide conductance for specific tastants to enter the taste cell

Answer 17

ion channels

Question 18

individual tastant molecules are sensed via ion channels or metabotropic receptors along the a _______

Answer 18

apical membrane

Question 19

______ increases in response to tastant-stimulation

Answer 19

cytosolic [Ca++]

Question 20

sweet, umami, and bitter are transduced via______

Answer 20

membrane receptors

Question 21

an afferent signal can be traced to a receptor

Answer 21

Labeled line

Question 22

What are the three neurotransmitters that can be releases from receptor cells

Answer 22

Serotonin
ATP
GABA

Question 23

________ channels admit an influx of Na+ that depolarizes the membrane

Answer 23

amiloride-sensitive Na+

Question 24

H+ ions diffuse through a _______

Answer 24

H+-permeant proton channel

Question 25

taste cell membrane ______ in response to salty and sour tastants

Answer 25

depolarizes