Countercurrent Mechanisms in Urine Concentration
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6 Terms
What is the osmotic gradient in the renal medulla essential for?
It is essential for creating concentrated urine.
How is the osmotic gradient established in the renal medulla?
Through differences in solute and water permeability in the Loop of Henle and collecting duct, along with countercurrent flow.
What is countercurrent multiplication?
A process that establishes the osmotic gradient in the renal medulla, with Na+ and Cl- symporters increasing solute concentration in the thick ascending limb.
How does countercurrent flow contribute to the osmotic gradient?
Countercurrent flow helps in the creation of an osmotic gradient that facilitates water reabsorption.
What role does urea recycling play in urine concentration?
Urea recycling causes a buildup of urea in the renal medulla, which helps concentrate urine.
What is countercurrent exchange?
It is a process that maintains the osmotic gradient in the renal medulla.