The adrenal medulla, located toward the bottom of this image, is responsible for the release of epinephrine and norepinephrine.Epinephrine and norepinephrine are released by the adrenal medulla and nervous system respectively.Norepinephrine is synthesized from dopamine by dopamine β-hydroxylase in the secretory granules of the medullary chromaffin cells and is released from the adrenal medulla into the blood as a hormone.The cortex mainly produces mineralcorticoids, glucocorticoids, and androgens, while the medulla chiefly produces adrenaline and nor-adrenaline.Each adrenal gland has two distinct structures, the outer adrenal cortex and the inner medulla-both produce hormones.These glands are composed of the adrenal cortex and the adrenal medulla.Adrenal glands are located on top of the kidneys.Epinephrine is the primary adrenal medulla hormone, accounting for 75 to 80 percent of its secretions.Adrenal glands are a pair of ductless glands located above the kidneys.Adrenal glands are composed of the adrenal cortex and medulla both produce hormones that control essential body functions and responses.The adrenal medulla sits below the three layers of the adrenal cortex and is innervated by nerve fibers.Chromaffin cells are the neuroendocrine cells found in the medulla they are modified post-synaptic sympathetic neurons that receive sympathetic input.The adrenal medulla secretes approximately 20% noradrenaline (norepinephrine) and 80% adrenaline (epinephrine).The adrenal medulla is responsible for the production of catecholamines, derived from the amino acid tyrosine.The adrenal medulla is the core of the adrenal glands, and is surrounded by the adrenal cortex.Examples of Adrenal medulla in the following topics:

Hormones from adrenal medulla