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Flashcards in Taste Deck (22):
0

TASTE RECEPTORS are LOCATED in the ___________.

Taste Buds

1

These are CLUSTERS of CELLS that lie either NEAR or WITHIN PAPILLAE.

Taste Buds

2

These are BUMPS or RIDGES of the TONGUE.

Papillae

3

These are stimulated when CHEMICAL SOLUTIONS PENETRATE a PORES in the TASTE BUD.

Taste Cells

*Fig. 7.20 p. 172*

4

INTEGRITY of TASTE CELLS depend on the ___________ that subserves it.

Sensory Neuron

5

The TWO (2) stages in process of EXCITING TASTE RECEPTORS are:

1.) PENETRATION of taste bud by CHEMICAL STIMULUS

OR

2.) Transduction

6

What are the FIVE (5) TASTE QUALITIES?

Sweet
Sour
Salty
Bitter
Umami

7

The taste quality SWEET is STIMULATED by ________.

Sugar

8

The taste quality BITTER is STIMULATED by _________.

Alkaloids

9

The taste quality SOUR is STIMULATED by _________.

Acids

10

The taste quality SALTY is STIMULATED by _________.

Salts

11

The taste quality UMAMI is STIMULATED by _________.

Glutamate and Amino Acids

(MONOSODIUM GLUTAMATE) (MSG)

12

True or False: all five taste receptors are located in the center of the tongue.

FALSE, there are NO TASTE BUDS in the CENTER of the TONGUE.

13

This condition is often referred to as TASTE BLINDNESS.

Ageusia

14

True or False: individual fibers in the taste nerve have the same level of sensitivity to different stimuli.

FALSE,

INDIVIDUAL FIBERS in the TASTE NERVE have DIFFERENT SENSITIVITIES to different stimuli.

15

True or False: it is anatomically impossible for two or more fiber to subserve one taste bud.

FALSE,

It is anatomically POSSIBLE for two or more fibers to subserve one taste bud

16

What happens if the TONGUE is CONTINUOUSLY STIMULATED w/ PARTIAL STIMULUS? (2 effects)

1.) ABSOLUTE THRESHOLD is ELEVATED
2.) Subjective INTENSITY of ADAPTING STIMULUS DECREASED

17

True or False: one stimulus of taste can be masked by another.

TRUE,

For example the SWEET taste in lemonade OVERPOWERS the SOUR taste.

18

Branches of CRANIAL NERVES ___ and ___ SUBSERVE TASTE BUDS.

VII (seven)
IX (nine)

19

In regards to TASTE neural centers and PATHWAYS, the SOLITARY __________ TERMINATES in the SOLITARY __________ of ___________(part of the brain).

solitary TRACT
solitary NUCLEUS
MEDULLA

*see HANDOUT*

20

From the SOLITARY NUCLEUS of TASTE PATHWAYS, fibers are processed via the _______________ to the ________________ which is part of the ________________ of the THALAMUS.

• MEDIAL LEMNISCUS
• ARCUATE NUCLEUS
• POST VENTRAL NUCLEUS (PVN)

*see HANDOUT*

21

From the POST VENTRAL NUCLEUS, FIBERS a PROJECT to AREAS _______ in the __________ lobe.

3-1-2
PARIETAL lobe

*Fig.7.2 p.183*

(see handout)