What Is the Function of Urea Reabsorption in the Collecting

question 34

Multiple Choice

What is the function of urea reabsorption in the collecting ducts of the kidney?

• A)It moves the urea into the ascending limb of the loop of Henle so that it can be excreted from there in the urine.
• B)It reduces the salinity of the renal medulla and thus helps regulate how much water is reabsorbed from the urine.
• C)It increases the osmotic concentration of the interstitial fluid in the renal medulla so that more water can be extracted from the urine.
• D)It restores the correct concentration of blood urea.

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Definitions:

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

Organic Molecules

Chemical compounds containing carbon atoms bonded together and with other elements, typically forming the basis of life on Earth.

Base

A substance that can accept hydrogen ions (protons) or more generally, donate a pair of valence electrons in reactions.

Brønsted-Lowry

The Brønsted-Lowry theory defines acids as proton (H+) donors and bases as proton acceptors, emphasizing the role of proton transfer in acid-base reactions.