Olfaction (smell)

Question 1

How often do olfactory neurons regenerate completely?

Answer 1

every few months

Question 2

where are sensory neurons located?

Answer 2

in epithelium of the superior portion of the nasal cavity

Question 3

where do the olfactory neurons synapse?

Answer 3

directly to the olfactory bulb (no thalamus intermediate)

Question 4

there are probably as many as ( ) odorant receptors but humans can distinguish ( ) different odors

Answer 4

1,000; 10,000

Question 5

What is the olfactory receptor classification?

Answer 5

G-protein coupled

Question 6

Golf increases ( ) which in turn opens channels

Answer 6

cyclic AMP

Question 7

Up to ( ) G-proteins may be associated with a single receptor, giving great amplification

Answer 7

50

Question 8

the olfactory bulb is part of what system?

Answer 8

limbic system

Question 9

olfactory plays a critical role in what?

Answer 9

memory and emotion

Question 10

the primary sensory cell is a

Answer 10

neuron

Question 11

do olfactory neurons regenerate?

Answer 11

yes

Question 12

where are olfactory neurons located?

Answer 12

epithelium of the superior portion of nasal cavity