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It is the innermost part of the adrenal gland, consisting of cells that secrete epinephrine (adrenaline), norepinephrine (noradrenaline), and a small amount of dopamine in response to stimulation by sympathetic preganglionic neurons.he adrenal medulla consists of irregularly shaped cells grouped around blood vessels. These cells are intimately connected with the sympathetic division of the autonomic nervous system (ANS).
The adrenal glands are divided into an outside layer called the cortex and an inner layer called the medulla. Cells in the adrenal cortex make steroid hormones derived from cholesterol, including glucocorticoids (cortisol), mineralocorticoids (aldosterone) and androgrens.The medulla makes catecholamines (adrenaline).ow levels of the hormones of the adrenal gland may result from disease in the adrenal gland itself (âprimaryâ adrenal insufficiency) or from failure of the pituitary gland to adequately stimulate the production of adrenal hormones (âsecondaryâ adrenal insufficiency).