6.4 Chemical Sense Taste And Smell

Question 0

Type 1 taste cells
A. Dark
B. Light
C. Intermediate

Answer 0

Type 1- dark
Type 2- light
Type 3- intermediate

Question 1

Lifespan of taste cells

Answer 1

10 days

Question 2

Needed to stimulate the tastes buds

Answer 2

Saliva

Question 3

Which papillae is not involved in gustation

Answer 3

Filiform papillae

Question 4

Fungiform papillae is innervated by

Answer 4

CN VII

Question 5

This papillae is innervated by CN VII and IX

Answer 5

Foliate

Question 6

Papillae Associated with Von ebner’s gland

Answer 6

Circumvallate

Question 7

Umami sensation is caused by

Answer 7

L-glutamate

Question 8

5 primary taste quality

Answer 8

Salty
Sweet
Sour
Bitter
Umami

Question 9

Taste buds are composed of modified epithelial cells specifically your ______ cells and ______ cells

Answer 9

Sustentacular/ supporting cells and taste cells

Question 10

Two taste receptors that activate ion channels

Answer 10

Salty Na receptors

Sour H receptors

Question 11

Activates 2nd messengers

Answer 11

Sweet

Bitter

Question 12

Receptor potential for taste

Answer 12

Change in electrical potential

Question 13

T or f

Bitterness is much more sensitive since it is important for survival as it confers protection from toxins

Answer 13

True

Question 14

Type 1: salty taste via ENAC; type 2 : ______ via _____

Answer 14

Type 2: sweet umami bitter taste via GPCR

Question 15

Transmitter of sour or type III cells

Answer 15

5-HT (Serotonin)

Question 16

Stimulates bitter 1 receptor by closing of K channels

Answer 16

Quinine

Question 17

Innervation of posterior 1/3 of tongue

Answer 17

Glossopharyngeal n

Question 18

Innervation of base of tongue

Answer 18

Vagus nerve

Question 19

Nerves transmit signals to which part of the brain stem

Answer 19

Nucleus tractus solitarius

Question 20

Nerve that DOES NOT transmit taste sensation

Answer 20

Lingual n.

Question 21

Absence of tastes due to damaged Glossopharyngeal or lingual n

Answer 21

Ageusia

Question 22

Diminished taste

Answer 22

Hypoguesia

Question 23

Unpleasant perception of taste

Answer 23

Paraguesia or dysguesia

Question 24

Olfactory receptors are what kind of receptors

Answer 24

Chemoreceptors

Question 25

T or f

Olfactory cells are true neurons which regenerate throughout life

Answer 25

True

Question 26

Olfactory membrane contains

Answer 26

Olfactory cells and bowman’s glands interspersed among sustentacular cells
Also contains trigeminal pain fibers

Question 27

Qualities of an odorant

Answer 27

Volatile

Slightly water and lipid soluble

Question 28

T or f

Feedback stimulation stimulates the inhibition to suppress relay of signals through the olfactory bulb

Answer 28

False - feedback inhibition

Question 29

Medial olfactory tract: old; lateral : 1. _____ and 2. _____

Answer 29

Lateral olfactory tract: less old and newer system

Question 30

The area concerned with the basic behavior to olfaction

Answer 30

Medial olfactory area

Question 31

Concerned with the association of some smells to certain memories; like and dislike

Answer 31

Lateral olfactory area specifically the less old OS

Question 32

In the lateral olfactory the signals go to which parts of the brain

Answer 32

Limbic system and hippocampus(memory)

Medial: limbic system and hypothalamus

Question 33

Concerned with the conscious analysis of odor

Answer 33

Lateral olfactory area specifically Newer pathway OS

Question 34

Newer pathway sends fibers that feed DIRECTLY into the paleocortex WITHOUT passing through the Thalamus
T or f

Answer 34

False.
LESS OLD pathway sends fibers that feed DIRECTLY into the paleocortex WITHOUT passing through the Thalamus

*NEWER pathway passed through the thalamus to the orbital frontal cortex