Chapter 15 — Taste and Smell

Question 1

smell

Answer 1

olfaction

Question 2

taste

Answer 2

gustation

Question 3

receptors

Answer 3

chemoreceptors (hair cells)

Question 4

smell stimuli

Answer 4

odorants

Question 5

odorants are _______

Answer 5

gaseous

Question 6

taste stimuli

Answer 6

tastants

Question 7

how does a chemical act on a chemoreceptor?

Answer 7

the chemical binds to the receptors on the cilia membrane, acts as a ligand opening Na+ channels, Na+ depolarizes cell and a receptor potential is created

Question 8

function of taste buds

Answer 8

house hair cells on tongue

Question 9

tastants must…

Answer 9

be in solution (saliva)

Question 10

5 tastes

Answer 10

sweet

sour

bitter

savory

salty

Question 11

sweet tastant

Answer 11

glucose or one of its isomers

Question 12

sour tastant

Answer 12

acid - H+ ions depolarize cell

Question 13

function of nasal concha

Answer 13

house hair cells

Question 14

how do odorants get to hair cells?

Answer 14

we inhale them, they enter the nasal cavity, mucus traps them, they diffuse through the mucus to the cilia of hair cells

Question 15

smell can elicit…

Answer 15

emotional responses related to relationships with other (particularly in women)