Gradient

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Related to Electrochemical gradient: electrochemical proton gradient

Gradient

The slope,or change in elevation,of land or improvements such as a pipe or a road.It is expressed as the ratio of inches (or feet) of rise or fall over a specified distance. It is similar to the concept of pitch in roofing.Figure A (above) has a gradient of 1:12 because the grade increases by 1 foot over a distance of 12 feet. Figure B has a gradient of 1:6.

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Although the orientation of the electrochemical gradient along most of the proximal tubule favors diffusion of magnesium from the lumen to blood through the paracellular pathway, this has not been demonstrated.
Ethanol increases the porosity of the cell membrane, making it very difficult for cells to maintain their electrochemical gradients.
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