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Автор: Jesse Russell
Год: 2013
Издание:
Книга по Требованию
Страниц: 100
ISBN: 9785514606085
High Quality Content by WIKIPEDIA articles! Potassium Spatial Buffering is a mechanism for the regulation of extracellular potassium concentration by astrocytes. Other mechanisms for astrocytic potassium clearance are carrier-operated or channel-operated potassium chloride uptake. The depolarization of neurons tends to raise potassium concentration in the extracellular fluid. If a significant rise occurs, it will interfere with neuronal signaling by depolarizing neurons. Astrocytes have large numbers of potassium ion channels facilitating removal of potassium ions from the extracellular fluid. They are taken up at one region of the astrocyte and then distributed throughout the cytoplasm of the cell, and further to its neighbors via gap junctions. This keeps extracellular potassium at levels that prevent interference with normal propagation of an action potential. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в...
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Jesse RussellPotassium spatial buffering
Jesse RussellJesse Russell
Samet H.The design and analysis of spatial data structures