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 ion channels to produce a depolarizing receptor potentialAction potentials are carried to the cortical gustatory area (parietal lobe), hypothalamus and limbic system