Maintaining sodium ion gradient by the loop of Henle

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5 Terms

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Ascending limb

Impermeable to water and has thicker walls

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Mitochondria provide energy to actively transport sodium ions out of the ascending limb of the loop of Henle.

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Accumulation of sodium ions outside the nephron in the medulla lowers the water potential.

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Therefore water diffuses out by osmosis into blood capillaries and is reabsorbed.

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At the base of the ascending limb some sodium ions are diffused out as there is a dilute solution.