Which of the Following Hormones Regulates the Sodium Ion Concentration

Question

Which of the following hormones regulates the sodium ion concentration of the blood?
A) Calcitonin
B) Growth hormone
C) Aldosterone
D) Gonadotropin
E) Glucagon

Accepted Answer

Aldosterone, a hormone secreted by the adrenal cortex, plays a crucial role in regulating the sodium ion concentration in the blood by increasing the reabsorption of sodium ions by the kidneys.