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A human kidney filters about 200 liters of blood each day. Approximately two liters of liquid and nutrient waste are excreted as urine. The remaining fluid and dissolved substances are reabsorbed and continue to circulate throughout the body. Antidiuretic hormone (ADH) is secreted in response to reduced plasma volume. ADH targets the collecting ducts in the kidney, stimulating the insertion of aquaporins into their plasma membranes and an increased reabsorption of water. If ADH secretion is inhibited, which of the following would initially result?a) Number of aquaporins would increase in response to the inhibition of ADH
b) The person would decrease oral water intake to compensate for the inhibition of ADH
c)Blood filtration would increase to compensate for lack of aquaporins
d) Person would produce a greater amount of dilute urine

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Answer:

d) Person would produce a greater amount of dilute urine

Explanation:

Since the primary role of ADH is to stimulate the reabsorption of fluid  from the Distal Convoluted Tubules  and Collecting Ducts  back into the blood to raise  water potential of the plasma, and therefore plasma volume in case of dehydration,Inhibition of its secretion, will momentary stop osmotic movements of the fluid back into the blood plasma.The permeability of the tubules will be reduced.Therefore, excess unreabsorbed  water  will be excreted in urine, as diluted urine a condition called POLYURIA.

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