Reduction of Fluid Losses at the Kidneys Due to the Retention

Question

Reduction of fluid losses at the kidneys due to the retention of Na+ is the action of
A) antidiuretic hormone.
B) calcitonin.
C) aldosterone.
D) cortisone.
E) oxytocin.

Accepted Answer

Aldosterone is a hormone secreted by the adrenal cortex that increases the reabsorption of sodium ions at the kidneys. This action leads to the retention of sodium ions and a subsequent increase in water reabsorption, reducing fluid losses at the kidneys.