Aldosterone - Definition

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Aldosterone is a hormone secreted by the adrenal glands. These endocrine glands synthesize it from cholesterol. Aldosterone plays a major role in the maintenance of blood volume (the volume of blood in the circulatory system of an individual), in blood pressure variations, etc. Indeed, blood pressure depends on blood volume along with other factors of regulation. Aldosterone also takes part in the maintenance of the concentration of potassium in the blood.