Increased ADH secretion is likely after
A) drinking lots of pure water.
B) sweating-induced dehydration increases plasma osmolarity.
C) ingestion of ethanol (drinking alcoholic drinks).
D) eating a small sugary snack.
E) blood pressure is abnormally high.

Question

Quizplus · Accepted Answer

Increased ADH secretion is a response to an increase in plasma osmolarity, which can occur due to sweating-induced dehydration.

Answer: C
 Ethanol inhibits ADH secretion, which in turn causes increased urine production and potential dehydration. Therefore, a compensatory increase in ADH secretion can occur after drinking alcoholic beverages.

Note: A, D, and E are incorrect because they do not cause an increase in plasma osmolarity, which is the main stimulator of ADH secretion.

Increased ADH Secretion Is Likely After