Taste And Smell

Question 0

Trace the taste pathway from the glossopharyngeal nerve.

Answer 0

Glossopharyngeal to geniculate ganglion to nucleus tractus solitarius in the brainstem to ventral posterior medial nucleus (thalamus) to gustatory cortex

Question 1

True or false. Lingual nerve transmits taste sensation.

Answer 1

False. Touch sensation only.

Question 2

True or false. The nose is concerned more with detection rather than quantification.

Answer 2

True

Question 3

What are the factors that influence food tastes?

Answer 3

Smell, texture, pain

Question 4

This is found in chili peppers and can stimulate gustatory, thermal, and pain receptors.

Answer 4

Capsaicin

Question 5

What receptors can capsaicin stimulate?

Answer 5

Gustatory
Thermal
Pain

Question 6

What are the modified epithelial cells in taste buds?

Answer 6

Sustentacular or supporting cell

Taste cell

Question 7

This comprises the actual taste receptor.

Answer 7

Taste cell

Question 8

These provide the receptor surface.

Answer 8

Microvilli

Question 9

Taste buds abundant at the tip of the tongue

Answer 9

Fungiform papillae

Question 10

Taste buds which are arranged in V formation at the back of the tongue.

Answer 10

Curcumvallate papillae

Question 11

Taste buds located on the posterior edge of the tongue.

Answer 11

Foliate papillae

Question 12

Innervation of the fungiform papillae.

Answer 12

CN VII

Question 13

Innervation of the circumvallate papillae

Answer 13

CN IX

Question 14

The papillae not involved in gustation.

Answer 14

Foliate

Question 15

What are the primary taste sensations?

Answer 15

Salty
Sour
Sweet
Bitter
Umami

Question 16

Detected by umami taste.

Answer 16

L-glutamate

Question 17

True or false. Salty sensation is caused by Iodized salts.

Answer 17

False. Ionized salt

Question 18

True or false. At high substance concentration, each taste bud responds to one taste stimuli.

Answer 18

False. At LOW substance concentration.

Question 19

This is the change in electrical potential..

Answer 19

Receptor potential

Question 20

True or false. Salty and sour activate second messengers.

Answer 20

False. They activate ion channels.

Only sweet and bitter activate second messengers

Question 21

True or false. There is a linear relationship between receptor potential and action potential.

Answer 21

False. Non linear

Question 22

T or f. We are much more sensitive to the bitter taste.

Answer 22

True, because it is important for survival and confers protectiveness against toxins.

Question 23

This is also known as the very old olfactory system

Answer 23

Medial olfactory area