Olfaction (2)

Question 1

What are the 3 main mechanisms involved in olfactory glomerulus formation?

Answer 1

Guidance molecules
Homophilic binding and local OR action
Activity-dependent pruning

Question 2

Name the secondary olfactory structures

Answer 2

Anterior olfactory nucleus
Piriform cortex
Amygdala

Question 3

How many glomeruli are present in the brain for each OR type?

Answer 3

4

Question 4

Name the 5 layers of the olfactory bulb, from external to internal

Answer 4

Olfactory nerve
Glomerular
External plexiform
Mitrial cell
Granule cell

Question 5

What are the 2 dendrite types of a mitrial cell and what do they each synapse with?

Answer 5

Apical - contact periglomerular cells

Lateral - contact granule cells

Question 6

What are TAARs and GC-Ds involved in?

Answer 6

Danger detection

Question 7

What is the role of the vomeronasal system?

Answer 7

Social interaction in animals

Question 8

What is the function of the piriform cortex?

Answer 8

Combines inputs from multiple glomeruli - recognises glomerular activity patterns