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Question

Which of the following hormone helps in facultative water reabsorption by nephrons?

A
MSH
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B
FSH
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C
ADH
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D
ACTH
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Solution

The correct option is C ADH
Antidiuretic hormone (ADH) is secreted by the posterior pituitary gland in response to dehydration and targets nephrons to increase water reabsorption and thereby decreasing water content in urine. Under conditions of higher water intake and lower perspiration, ADH is not released. So, ADH regulates the water reabsorption by nephron in a facultative manner i.e., according to the hydration level of the body. The correct answer is C.

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