Anatomy and Cell Biology 3309 Lecture Notes - Lecture 17: Taste Bud, Lingual Papilla, Lamina Propria
23 Jan 2017
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Taste buds in circumvallate,fungiform, and foliate papillae, but even in palate and epiglottis appear as oval bodies in the epithelium a small opening called the taste pore is present at the surface. Basal cells at the lower periphery are stem cells giving rise to all other cells. Supporting immature taste receptor cells lie at periphery central mature taste receptor cells with microvilli and synapses with afferent nerves taste buds all have similar structure but differ in their receptive properties (sweet, bitter, etc) The bud is formed by two kinds of cells: supporting cells and gustatory cells. The supporting (sustentacular cells) are mostly arranged like the staves of a cask, and form an outer envelope for the bud. Some, however, are found in the interior of the bud between the gustatory cells. The gustatory (taste) cells, a chemoreceptor, occupy the central portion of the bud; they are spindle-shaped, and each possesses a large spherical nucleus near the middle of the cell.
