The Mechanism for Producing a Concentrated Urine Involves All of the Following

question 32

Multiple Choice

The mechanism for producing a concentrated urine involves all of the following except

• A) the secretion of antidiuretic hormone (ADH) by the posterior pituitary gland.
• B) aquaporins being inserted into the membranes of the collecting duct cells.
• C) a high concentration of NaCl in the interstitial fluid that surrounds the collecting ducts.
• D) an increase in facultative water reabsorption.
• E) obligatory water reabsorption in the proximal convoluted tubule.

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