Taste and SmellChemoreceptors for taste (gustatory) sensationEach mammalian taste bud has about 50 receptor cells, supporting cells and a taste poreㆍOnly chemicals in solution can evoke tastesensationMicrovilli contain chemoreceptorsBinding of tastant with receptor cell alters ionchannels to produce a depolarizing receptorpotentialAction potentials are carried to the corticalgustatory area (parietal lobe), hypothalamusand limbic system