In the cortex of the adrenal glands secrete 3 zones: the outer - glomerular, high - beam and internal - mesh. In the glomerular zone produced mainly mineralocorticoid in the beam - glucocorticoids in buy nolvadex online canada net - sex hormones mainly androgens). Chemical structure adrenocortical hormones are steroids. The mechanism of action of steroid hormones is a direct impact on the genetic apparatus of the cell nucleus, stimulating the synthesis of the corresponding RNA synthesis activation transporting cations of proteins and enzymes, as well as increasing membrane permeability to amino acids. Mineralocorticoid.