The first part of the ascending limb of Henle's loop ...

Question

Accepted Answer

is permeable to electrolytes

Accepted Answer

is impermeable to urea which has been loaded in the descending limb and will be released to the deep medullary interstitium from the collecting duct

Accepted Answer

has a thin epithelium because only passive transports occur there

Accepted Answer

lets electrolytes out of the lumen simply due to the osmolarity in the lumen being higher than in the interstitium

Answer

expresses the same Na:Cl transporter that is expressed in the whole distal convoluted tubule

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has a thick epithelium because it performs an intense transport activity

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expresses the same transport systems as the thick part

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actively contributes to the generation of the osmotic gradient in the medulla

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is permeable to water

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