Which hormone, secreted by the adrenal cortex, helps regulate sodium and potassium ion balance in the kidneys and maintains blood volume?

💡 Solution & Explanation

Aldosterone is a mineralocorticoid synthesized by the adrenal cortex that promotes sodium and water retention alongside potassium excretion in the renal tubules, thereby stabilizing blood pressure and volume. Cortisol is a glucocorticoid focused on metabolism and stress response. The adrenal glands regulate numerous vital homeostatic loops in the human body.