Which of the Following Contribute to Maintaining the High Osmolarity

question 23

Multiple Choice

Which of the following contribute to maintaining the high osmolarity of the renal medulla?
I.active transport of salt from the upper region of the ascending limb
II.the spatial arrangement of juxtamedullary nephrons
III.diffusion of urea from the collecting duct
IV.diffusion of salt from the descending limb of the loop of Henle

• A) All of these conditions contribute to the osmolarity of the medulla.
• B) I, II, and III
• C) I and IV
• D) I, II, and IV

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Definitions:

Monopolistic Competitor

A firm in a market that sells products that are differentiated from those of competitors, but not to the extent of a monopoly, leading to some degree of market power.

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The long run is a period in economics where all factors of production and costs are variable, allowing companies to adjust all inputs.

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