hormone responsible for regulating water volume in blood
Endocrinology An adrenocortical mineralocorticoid hormone that controls the body's electrolyte and water homeostasis by regulating reabsorption of Na+ and Clâ in exchange for K+ and H+ ions, and maintaining BP and blood volume; aldosterone secretion is controlled by the RAA system and by concentrations of K+ in the circulation, which if â, evokes ...