Synaptic communication and signal processing among sensory cells in taste buds
نویسندگان
چکیده
منابع مشابه
Bidirectional synaptic transmission in Necturus taste buds.
Pairs of taste cells were impaled with intracellular recording microelectrodes in intact taste buds in slices of Necturus lingual epithelium. Applying short pulses of 140 mM KCl or 200 mM CaCl2 solutions to the apical pore elicited receptor potentials in taste receptor cells. Chemostimulation of receptor cells elicited postsynaptic responses in basal cells in the taste bud. Postsynaptic respons...
متن کاملSynaptic connections in developing and adult rat taste buds.
Synaptic connections in rat taste buds closely resemble synapses found in the CNS. Taste bud synapses are characterized by parallel, apposed, thickened membranes that are separated by a cleft ranging from 16 to 30 nm. The putative synaptic vesicles are of two types: small, clear vesicles (40–70 nm) and large, dense-cored vesicles (90–120 nm). The small, clear vesicles predominate at most synaps...
متن کاملRenewal 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 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 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...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 2014
ISSN: 0022-3751
DOI: 10.1113/jphysiol.2013.269837