Each adrenal gland has two distinct structures, the outer adrenal cortex and the inner medulla—both produce hormones. The adrenal glands are responsible for releasing four classes of hormones: Mineralocorticoids (aldosterone)Glucocorticoids (cortisol, corticosterone, cortisone)Androgens (DHEA, DHEA-s)Catecholamines (adrenaline, noradrenaline) Aldosterone Aldosterone is secreted in response to high extracellular potassium levels, low extracellular sodium levels, and low fluid levels...