taste and smell Flashcards
molecules that stimulate taste receptors must be ___ soluble
water
5 primary tastes
sweet, bitter, sour, salt, umami
afferent nerves carried by what cranial nerves
VII, IX, X
each taste bud contains how many taste receptor cells
50-100
taste receptors are located on
cilia of taste cells
taste receptors are
epithelial derivatives
type I taste receptor cell
salty
type II taste receptor cell
sweet umami bitter
type III taste receptor cell
sour
only type ___ cells directly synapse with gustatory nerve
III
the smell receptor cell is
specialized nerve
smell nerve renewed every __ days
30-60
interaction of receptor nerve and stimulus stimulates
second messenger pathways
oderant stimulates
intercellular cAMP synthesis
increased ___ is necessary for transduction of odorant
(cAMP)intercellular
sensory nerves connect to secondary nerves in ___
glomeruli
many tertiary nerves connect to the
limbic system
very old aroma pathway
medial olfactory nuclei results in physical aversion
old pathway
lateral olfactory nuclei results in aversion
new pathway
thalamo-cortical area and mediates perception odorant
