olfaction and gustation

olfactory epithelium

the lining of the roof of the nasal cavity, containing a sheet of receptor cells for smell

• has receptor and stem cells to constantly regenerate neurons

olfactory glands

secrete mucous to prevent debris and keep area moist

scent molecules

diffuse into mucous to be detected

olfactory pathway

1. odornants are trapped in mucous

2. sensory receptors are triggered

3. nerve impulses are sent to brain and pass through the limbic system

4. smell interpreted by brain

where are taste receptors located

on the roof of the tongue and some of the throat

taste buds are __

in epithelial proturusions called papilla that protect them

circumvallae papillae

form the "V" shape on the back of the tongue

what are the five types of taste?

sweet, salty, sour, bitter, umami

where is taste sent in the brain?

cerebrum

Gustary senses are ___ more effective with input of olfactory senses

1000

older/younger

you lose taste buds as you get older/ your taste buds are more sensitive when younger