olfaction

Question 1

sensory receptors are found on the

Answer 1

olfactory epithelium

Question 2

threshold varies with different molecules

Answer 2

ethanol 2mM

Question 3

interpretation of smell is conc dependent

Answer 3

indole

Question 4

olfaction is a reflection of the

Answer 4

pattern of different cells that are activated by the different molecules

Question 5

pheromones

vomeronasol organ expresses a specific subset of molecules called

Answer 5

vomeronasal receptors

Question 6

pheromones

accessory olfactory bulb

Answer 6

prjoects to the amygdala and hypothalamus

regulates behaviour and mood

Question 7

olfactory neurons are

Answer 7

bipolar

and unmyelinated

Question 8

where are they embedded

Answer 8

mucus layer

Question 9

mucus layer is projected by

Answer 9

bowmans capsule

Question 10

what does the mucus layer provide

Answer 10

concentrates the chemicals at the apical

Question 11

how long do the neurons last

Answer 11

6-8 weeks

Question 12

what type of receptor is used

Answer 12

GPCR

large amount of sequence variability

Question 13

once alpha is released what happens

Answer 13

activates adenylate cyclase 3
atp—- cAMP
which activates CNG allowing Na+ and Ca2+ in

Question 14

after AP the axon passes through what

Answer 14

cribriform plate to the olfactory bulb

Question 15

glomeruli what happens

Answer 15

same odorant receptor projects to the same region

Question 16

the relationship between 1 type of olfactory neuron and 1 glomeruli enables specific regions of the bulb to

Answer 16

respond selectively to different chemicals

Question 17

different chemicals will activate a

Answer 17

unique spatial pattern in the bulb

Question 18

a single glomerulus can contain

Answer 18

dendrites from upto 25 mitral cells increasing amplification