Olfaction and Gustation - Anatomy and Physiology Test #3

olfaction

olfactory epithelium

10 - 100 million receptors; superior nasal cavity; cribifirm plate - ethmoid bone; olfacotry nerve - olfactory bulbs

hair cells

cilia that extend from the dendrite; respind to chemical stimulation

adaptation

decreasing sensitvity; 50% after the first second

regeneration

the ability to replace damaged or lost sensory cells, such as those in the olfactory epithelium, allowing for continued function of the sensory system

olfactory bulbs

structures in the brain responsible for processing smell information from olfactory receptors

gustation

chemical must be dissolved to taste them; 5 primary tasters (sour, salt, sweet, bitter, umami)

gustatory receptor cells

gustatory hair extend through taste pore in taste bud and detect dissolved tastants, contributing to the perception of taste.

taste buds

tongue and soft palate, pharynx, and epiglottis