12.2

Question 1

What is the olfactory epithelium?

Answer 1

The receptor surface for olfaction

Question 2

What is the mucous layer of the olfactory system - where cilia is housed - called?

Answer 2

Olfactory mucosa

Question 3

How do the chemicals we inhale trigger cilia?

Answer 3

By dissolving into the olfactory mucosa

Question 4

Are olfactory receptors ionotropic or metabotropic?

Answer 4

Metabotropic

Question 5

What is the pathway of the olfactory system?

Answer 5

Receptor cells -> olfactory bulb (glomeruli) -> mitral cells -> cortex (amygdala and pyriform cortex)

Question 6

What is the orbitofrontal cortex? (OFC)

Answer 6

Prefrontal cortex behind the eye sockets; receives projections from the dorsomedial nucleus of the thalamus; central to a variety of emotional and social behaviors, including eating; associates taste/odor with reward; secondary olfactory cortex

Question 7

What are pheromones?

Answer 7

Biochemicals released by one animal that act as chemosignals and can affect the physiology or behavior of another animal of the same species

Question 8

What olfactory receptor system detects pheromones?

Answer 8

The vomeronasal organ

Question 9

Where does the vomeronasal organ connect to in the brain?

Answer 9

Accessory olfactory bulb -> amygdala and hypothalamus

Question 10

What is the primary olfactory cortex?

Answer 10

The pyriform cortex

Question 11

The _______ evaluates the affective properties of tastes, while the _______ identifies the nature and intensity of flavors

Answer 11

OFC; insula