Which of the following would result in the production of hypotonic urine?

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Dehydration in an individual

Increase in the permeability of collecting duct to water

A decrease in the levels of ADH

An increase in water reabsorption by Henle’s loop

answer is C.

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Detailed Solution

The decrease in antidiuretic hormone (ADH) leads to the production of dilute, hypotonic urine. ADH plays a key role in regulating water reabsorption in the kidneys.

When ADH is present, it promotes the reabsorption of water from the filtrate back into the bloodstream, concentrating the urine. This is especially important when the body needs to conserve water due to dehydration or other factors.

However, when ADH is absent or not functioning properly (a condition known as diabetes insipidus), the kidneys do not reabsorb as much water, and the resulting urine is more dilute and hypotonic. This can lead to increased urine output and a risk of dehydration if not properly managed.

So, the absence of ADH leads to the production of hypotonic (dilute) urine.

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