Which of the following systems or mechanisms regulates the secretion of aldosterone?
a. renin-angiotensin system
b. negative feedback system involving adrenocorticotropic hormone (ACTH)
c. immune system
d. baroreceptors in the circulatory system
A
Feedback
A Correct. Aldosterone is the most important mineralocorticoid, causing sodium retention and potassium excretion. Its secretion is regulated by the renin-angiotensin system.
B Incorrect. The negative feedback system involving adrenocorticotropic hormone (ACTH) does not regulate the secretion of aldosterone.
C Incorrect. The immune system does not regulate the secretion of aldosterone.
D Incorrect. The baroreceptors in the circulatory system do not regulate the secretion of aldosterone.
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