Lecture 14 & 15

Question 1

The correct sequence of sensory processing is _____.

a. sensory adaptation → stimulus reception → sensory transduction sensory perception
b. stimulus reception → sensory perception → sensory adaptation sensory transduction
c. sensory perception → stimulus reception → sensory transduction sensory adaptation
d. stimulus reception → sensory transduction → sensory perception sensory adaptation

Answer 1

d. stimulus reception → sensory transduction → sensory perception sensory adaptation

Question 2

A given photon of light may trigger an action potential with thousands of times more energy because the signal strength is amplified by _____.

a. a signal transduction pathway
b. a G protein
c. the receptor
d. triggering several receptors at once

Answer 2

a. a signal transduction pathway

Question 3

Which type of receptor would you expect to be most abundant in the antennae of a moth?

a. thermoreceptors
b. mechanoreceptors
c. electroreceptors
d. chemoreceptors

Answer 3

d. chemoreceptors

Question 4

During an auditory transduction, ion flow varies across the _____.

a. round-window membrane
b. hair cell membrane
c. tectorial membrane
d. basilar membrane

Answer 4

b. hair cell membrane

Question 5

Rods exposed to light will _____.

a. depolarize due to the opening of sodium channels
b. hyperpolarize due to the closing of potassium channels
c. depolarize due to the opening of potassium channels
d. hyperpolarize due to the closing of sodium channels

Answer 5

d. hyperpolarize due to the closing of sodium channels

Question 6

Which of the following sensory receptors is correctly paired with its category?

a. taste receptor – mechanoreceptor
b. hair cell – mechanoreceptor
c. muscle spindle – electromagnetic receptor
d. rod – chemoreceptor

Answer 6

b. hair cell – mechanoreceptor

Question 7

Tastes and smells are distinct kinds of environmental information in that _____.

a. the single area of the cerebral cortex that receives smell and taste signals can distinguish tastes and smells by the pattern of action potentials received
d. distinguishing tastant molecules requires learning, whereas smell discrimination is an innate process
c. neural projections from taste receptors reach different parts of the brain than the neural projections from olfactory receptors
d. tastant molecules are airborne, whereas odorant molecules are dissolved in fluids

Answer 7

c. neural projections from taste receptors reach different parts of the brain than the neural projections from olfactory receptors