Taste & Olfaction

Question 1

Olfactory Receptor Neurons:

What are the steps in which we can distinguish scents?

9 steps

Answer 1

1. Odoranr binds to receptors
2. Leads to D-Protein activation
3. Which activates Adenylyl cyclase
4. Producing cCamp
5. cAMP binds to ion channels
6. Ca2+ & Na+ goes in
7. Opening chloride ion channels because of calcium
8. Also opens outward chloride current
9. and then depolarization happens in the receptor cilia

Question 2

In the oflactory receptor neurons where do the action potentional originate?
A. Olfactory Nerve
B. Dendrite
C. Cilia
D. Cell Body
E. Epithelium

Answer 2

D. Cell Body

Question 3

If someone is experiencing olfatory hallucinations and unpleseant smells and has seizure activity in the temporal lobe what disorder might they be experiencing?
A. Anosmia
B. Cacosmia
C. Cochlea
D. Hyposmia
E. Ageusia

Remember: Breakdown the question, highlight key terms

Answer 3

B. Cacosmia

Cacosmia is a disorder with losing smell

Question 4

Central taste pathway disorder: Key Term

The loss of taste and perception from localized lessions

Answer 4

Term: Ageusia

Ageusia is the term to describe the loss of your sense of taste

Question 5

Where does transduction occur in the olfactory bulb ?

Answer 5

Olfactory receptor cells in the cilia

Question 6

What are the two tyes of secondary-order olfactory neurons found in the glomerlus ?

Answer 6

1. Mitral
2. Tuffed

Question 7

What is the glomerulus?

Answer 7

decode the identity of the odor in the olfactory bulb

Question 8

What are two inhibitory neurons in the olfactory bulbs?

Answer 8

1. Periglomerular cells
2. Granule Cell

Question 9

What are the five organs asscoiated with taste?

Answer 9

1. Tongue
2. Mouth
3. Palate
4. Pharynx
5. Epiglottis

Question 10

The mechanisms of taste transduction relies on what g-protein coupled receptors?

Answer 10

Gustducins