The sense of taste, or gustatory sense, occurs in the taste buds. Located primarily on the tongue, taste buds reside in papillae,
the bumps on the tongue that give it a rough texture. The taste bud consists of supporting cells, basal cells, and gustatory (receptor) cells arranged in the shape of a globe.
The globe has an opening, or taste pore, to the outside located at the top. A long microvilli (or gustatory hair
) from each gustatory receptor cell within the taste bud projects through the taste pore. Gustatory hairs generate action potentials when stimulated by chemicals that are dissolved in the saliva.