Taste And Smell

Front 1

What is the difference between sensation and perception?

Back 1

Sensation is what the sense organ detects

Perception is how the brain responds to it

Front 2

Are taste buds found only on the tongue?

Back 2

No, they are also on the palate and pharanx

Front 3

How does sensation of pain and temperature differ from taste and smell besides the latter being chemical?

Back 3

Pain and temperature sensors are part of the free nerve endings while taste and smell have a sense cell that transduces signal to a neuron

Front 4

Are tonic receptors slow or fast adapting?

How do they work?

Back 4

Slow-adapting

Produce a constant rate of firing as long as stimulus is applied (like pain)

Front 5

Are phasic receptors slow or fast adapting?

How do they work?

Back 5

Fast-adapting

APs are fast at first but reduce in frequency if stimulus is maintained to facilitate habituation

Front 6

What term denotes the concept that regardless of how a sensation is perceived, the information to the brain will perceive only one type of sense?

Back 6

Labeled-line

Front 7

What is the detection threshold of smell?

taste?

Back 7

Smell = ppt

Taste = ppm

Front 8

To which taste are we most sensitive?

Back 8

bitter

Front 9

How does the generator potential for tonic and phasic receptors differ?

Back 9

Tonic = AP is proportional to GP

Phasic = GP is proportional to AP to a certain point and then GP diminishes

(Phasic tires out)

Front 10

Which 3 papillae have tastebuds?

Back 10

- Fungiform

- Foliate

- Circumvalate

Front 11

How fast do taste cells turnover?

Back 11

10 days

Front 12

What kind of receptors are taste cells?

Back 12

G-protein coupled receptors

Front 13

Can lipids be tasted well?

Back 13

No

Front 14

How does the brain interpret taste if more than 1 type of taste cell activates a specific neuron?

Back 14

It integrates the spatial location and pattern of taste signals with smell information

Front 15

Which two tastes are ion-channel stimulated?

Back 15

Salty and Sour (Na+ and H+)

Front 16

What cranial nerve innervates the anterior 2/3 of the tongue?

Back 16

CN VII

Front 17

What cranial nerve innervates the posterior 1/3 of the tongue?

Back 17

CN IX

Front 18

What cranial nerve innervates the pharynx and larynx?

Back 18

CN X

Front 19

What cranial nerve carries thermal, tactile, and pain sensation of the tongue?

Back 19

CN V

Front 20

In what lobe of the brain is the taste cortex?

Back 20

Parietal lobe

Front 21

What is the loss of taste called?

Back 21

dysguesia

Front 22

How long do olfactory neurons live?

Back 22

2 months

Front 23

What percent of taste is olfaction?

Back 23

80%

Front 24

What is the loss of the sense of smell?

Back 24

anosmia