sodium pump

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so′dium pump`


n.
an energy-consuming mechanism in cell membranes that transports sodium ions across the membrane, in exchange for potassium ions or other substances.
[1960–65]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive
Cation depletion by the sodium pump in red cells with pathologic cation leaks.
In vivo and in vitro sodium pump activity in subjects with thyrotoxic periodic paralysis.
To see how the mechanism of hearing resembles a battery, you need to know that the auditory system of the fruit fly contains a protein that functions as a sodium/potassium pump, often called the sodium pump for short, and is highly expressed in a specialized support cell called the scolopale cell.
The primary sodium circuit with two pumps and four IHX (Intermediate Heat Exchanger) is contained within the reactor assembly and the secondary sodium circuit consists of 2 identical loops each with a sodium pump and four Steam Generators (SG).
Indeed, it has been proposed that intestinal sodium transport is mediated by two active mechanisms: The [Na.sup.+]/[K.sup.+] pump, that has been characterized at the cellular and molecular level and the second sodium pump that actively transports [Na.sup.+], accompanied by Cl- and water.
Another function of Vein Lite is regulation of [Na.sup.+][K.sup.+]ATPase (NKA), also called a sodium pump or sodium-potassium exchange.
Their main pharmacologic actions are mediated through inhibition of the sodium pump, [Na.sup.+] - and [K.sup.+]-dependent ATPase (NKA)3 (EC 3.6.3.9) (2).
Combined with previous studies from our laboratory on the metabolic importance of the sodium pump during development of this Antarctic sea urchin, we now provide an analysis of the "cost of living" during development in the cold.
Most monosaccharides are absorbed via the sodium pump. Sodium is the main cation of extracellular fluid.
These steroids were thought to work primarily by binding and inhibiting a cell structure called the sodium pump, which indirectly increases the amount of calcium inside the cell.
Exposure to the secondhand smoke produced by as little as two cigarettes was found to almost completely stop the function of a cell's sodium pump within a few hours.
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