Question

Consumption of alcohol, particularly larger volumes, causes increased urination. This is primarily due to inhibition of the secretion of which hormone?
Select one:
a. Aldosterone
b. Cortisol
c. Adrenaline
d. Anti-diuretic hormone (ADH)
e. Renin

Answer 1

Answer:

The correct answer is D.

Explanation:

ADH, also called arginine vasopressin is a hypothalamic hormone (storaged in the posterior pituitary) that regulates body’s osmotic balance.

ADH increases the amount of solute-free water reabsorbed from the one filtrated in the kidneys.

Also, increases peripheral vascular resistance due to the constriction of arterioles, and therefore raises blood pressure.  

Ethanol (alcohol) reduces secretion of ADH by blocking voltage-gated calcium channels. As a result, urine volume increases and this may cause dehydration.