electrochemical gradient

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rate of increase or decrease of a variable value, or its representative curve.
edge gradient in radiology, the penumbra or partial shadow on a radiograph caused by the three-dimensional shape of an object.
electrochemical gradient the difference in ion concentration and electrical potential from one point to another, so that ions tend to move passively along it.

e·lec·tro·chem·i·cal gra·di·ent

a measure of the tendency of an ion to move passively from one point to another, taking into consideration the differences in its concentration and in the electrical potentials between the two points; commonly expressed as the additional voltage needed to achieve equilibrium.

electrochemical gradient

a trans MEMBRANE gradient formed as a result of the movement of an ION or other SOLUTE across the membrane. This comprises a gradient of electrical charge and a concentration gradient, which depends on the distribution of the ion across the membrane. Such a gradient can be generated by the operation of an ELECTRON TRANSPORT SYSTEM, in the form of a proton motive force (pmf).


emanating from or pertaining to electrochemistry.

electrochemical equivalent
the atomic weight divided by the ionic valence of an electrolyte. Provides a quantitative indication of the combining properties of an electrolyte solution. The relationship between weight per volume and milliequivalents can be expressed as:
$${\rm {{mg \ /100\ ml} \over atomic \ weight} \times Valence \times 10 = mEq/l}$$
$${\rm {{mg \ /100\ ml} \over atomic \ weight} \times Valence \times 10 = mEq/l}$$
electrochemical gradient
the differences in electrochemial potential between two points.
intestinal electrochemical gradient
electrical potential differences and ion concentration differences across the external membrane of the intestinal mucosa arising from the active transport of most electrolytes and some nonelectrolytes across the membrane.
References in periodicals archive ?
Ethanol increases the porosity of the cell membrane, making it very difficult for cells to maintain their electrochemical gradients.
Serotonin (5-HT) transport via SERT functions to terminate synaptic serotonergic transmission and is energetically coupled to the inwardly-directed electrochemical gradients of [Na.
Ion channels are membrane proteins that permit or do not permit ions to pass through cellular membranes according to ion concentration and electrochemical gradients.

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