Question

10 multiple choice 10 points 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? the number of aquaporins would increase in response to the inhibition of adh. blood filtration would increase to compensate for the lack of aquaporins. the person would decrease oral water intake to compensate for the inhibition of adh. the person would produce greater amounts of dilute urine.

Explanation:

Antidiuretic hormone (ADH) promotes water reabsorption in the kidneys. If ADH secretion is inhibited, the kidneys cannot reabsorb as much water. This leads to less water being retained in the body and more being excreted. As a result, the person would produce greater amounts of dilute urine.

• The first option is incorrect because ADH stimulates aquaporin insertion. Inhibiting ADH would not increase aquaporins.
• The second option is wrong as blood filtration is mainly related to glomerular function, not directly compensating for lack of aquaporins due to ADH inhibition.
• The third option is incorrect because decreased ADH leads to more water loss, so the body would likely increase (not decrease) oral water intake to compensate, but this is not the initial result.

Answer:

The person would produce greater amounts of dilute urine.