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countercurrent |
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countercurrent /coun·ter·cur·rent/ (-kur″ent) flowing in an opposite direction. countercurrent, a change in the direction of flow of a fluid. An example is the countercurrent in the ascending branch of a kidney tubule where osmolality undergoes a reversal after a gradual change in sodium chloride concentrations. countercurrent flowing in an opposite direction. countercurrent exchanger a countercurrent system in which transport between the inflow and the outflow is passive. countercurrent multiplier a mechanism that enables a membrane to absorb much more solute than water so that the residual fluid has a lower osmotic pressure. The classical example of this phenomenon is the loop of Henle in the kidney. Called also countercurrent multiplier mechanism or system. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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count, differential white blood cell count, platelet count, reticulocyte count, white blood cell counter counter immunoelectrophoresis counter- Counter-current counteraction counterclaim counterconditioning countercurrent countercurrent multiplication counterdetailing counterdie |
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