netter39

Custatory (Taste) System: Receptors

NEUROPHYSIOLOGY

A. Tongue

B. Section through vallate papilla

gland

flbers emerging from taste buds

f

}

Ł

D. Detail of taste porę    E. Detail of base of receptor cells

Figurę 2.38 Taste Receptors

Taste buds on Ihc tongue respond to various Chemical stimuli. Taste cells, like neurons, normally have a net negative charge internally and are depołarized by stimuli, thus roleasing transmitters that depolarize

neurons connected to the taste cells. A single i morę than one stiniulus. TIk* four traditiorial ta sensed are sweet salty, sour, and bitter

te bud can respond to : (|ualiti(S that are

49