Olfaction and Taste

Question 1

Olfactory epithelium – olfactory receptors

Stimulated by odorant molecules

Answer 1

a

Question 2

Receptors: specific to odorant molecular particulates

Answer 2

a

Question 3

Olfactory receptors in nasal mucosa - olfactory filaments form CN I – cribriform plate –
olfactory bulb – glomerulus of mitral cell, then:
Lateral Olfactory tract – amygdala and piriform cortex – dorsomedial thalamus –
orbitofrontal and insular cortex
Medial ofactory stria – olfactory trigone (tubercle)

Answer 3

a

Question 4

Rostral commissure is the corpus callosum of the piriform lobe, interconnecting left and right

Answer 4

a

Question 5

Olfactory discernment

Answer 5

feeding- inspection, ingestion
communication- mating
navigation- foraging

Question 6

Olfactory guides to behavior – mating, danger

Answer 6

a

Question 7

Vomernasal organ – accessory olf bulb – amygdala and piriform cortex (different regions that
main olfactory system)

Answer 7

chemoreceptive structure in a small pocket

communicating with the nasal cavity and/or the mouth

Question 8

Pheromones – social communication, reproductive status – initiates reproductive behaviors

Answer 8

a

Question 9

Acuity proportional to Mucosal/receptor Area: species dependent
Human 1x; dog 40x; bear 400x

Answer 9

a