منابع مشابه
Renewal of Cells within Taste Buds
Colchicine blocks mitotic division of the epithelial cells surrounding the taste bud of the rat tongue. Response to chemical stimulation decreases 50 per cent 3 hours after colchicine injection as measured by recording the electrical activity from the taste nerve bundle. Radioautography, using tritiated thymidine, shows that those epithelial cells surrounding the taste bud divide and that some ...
متن کاملTaste isn't just for taste buds anymore
Taste is a discriminative sense involving specialized receptor cells of the oral cavity (taste buds) and at least two distinct families of G protein-coupled receptor molecules that detect nutritionally important substances or potential toxins. Yet the receptor mechanisms that drive taste also are utilized by numerous systems throughout the body. How and why these so-called taste receptors are u...
متن کاملCellular mechanisms in taste buds.
In the soft palate, tongue, pharynx and larynx surrounding the oral region, taste buds are present, allowing the sensation of taste. On the tongue surface, 3 kinds of papillae are present: fungiform, foliate, and circumvallate. Approximately 5,000 taste buds cover the surface of the human tongue, with about 30% fungiform, 30% foliate and 40% circumvallate papillae. Each taste bud comprises 4 ki...
متن کاملBreadth of tuning and taste coding in mammalian taste buds.
A longstanding question in taste research concerns taste coding and, in particular, how broadly are individual taste bud cells tuned to taste qualities (sweet, bitter, umami, salty, and sour). Taste bud cells express G-protein-coupled receptors for sweet, bitter, or umami tastes but not in combination. However, responses to multiple taste qualities have been recorded in individual taste cells. ...
متن کاملCell types and lineages in taste buds.
Taste buds are the sensory endorgans for gustation. In mammals, taste buds comprise a collection of ~50–100 elongate epithelial cells and a small number of proliferative basal cells. Ultrastructural studies reveal three distinct anatomical types of elongate taste cells within each taste bud: Type I, Type II and Type III, first defined by Murray based on his studies of rabbit foliate taste buds ...
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ژورنال
عنوان ژورنال: Nature Reviews Neuroscience
سال: 2017
ISSN: 1471-003X,1471-0048
DOI: 10.1038/nrn.2017.68