Aldosterone is a '''steroid hormone''' which is secreted from the '''zona glomerulosa''' of the adrenal gland. It has a mineralocorticoid activity and is the most important regulator of plasma potassium. When plasma potassium increases, increased stimulation of aldosterone occurs directly and also as a result of the [[Renin Angiotensin Aldosterone System|Renin-Angiotensin-Aldosterone System (RAAS)]]. Aldosterone is also the most important regulator of sodium excretion.
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Aldosterone is a '''steroid hormone''' which is secreted from the [[Adrenal Glands - Anatomy & Physiology#Mineralocorticoids|'''zona glomerulosa''' of the adrenal gland]]. It has a mineralocorticoid activity and is the most important regulator of plasma potassium. When plasma potassium increases, increased stimulation of aldosterone occurs directly and also as a result of the [[Renin Angiotensin Aldosterone System|Renin-Angiotensin-Aldosterone System (RAAS)]]. Aldosterone is also the most important regulator of sodium excretion.