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You have two adrenal glands — one on top of each kidney. They contain the cortex, the largest part of the gland, and the medulla, the smaller inner part. Your adrenal gland is highly vascular, with as many as 50 arterial branches providing its blood supply.
The adrenal gland is made up of the cortex and medulla. The cortex produces steroid hormones including glucocorticoids, mineralocorticoids, and adrenal androgens, and the medulla produces the catecholamines, epinephrine, and norepinephrine.
The adrenal glands, located superior to each kidney, consist of two regions: the adrenal cortex and adrenal medulla. The adrenal cortex—the outer layer of the gland—produces mineralocorticoids, glucocorticoids, and androgens.
Adrenal glands have two main parts: Adrenal medulla (inside) and adrenal cortex (outside). What are adrenal glands? Your adrenal glands, also known as suprarenal glands, are small, triangle-shaped glands that are located on top of each of your two kidneys.
The adrenal (suprarenal) medulla, or the medulla of the suprarenal gland, refers to the inner central part of each adrenal gland and is derived from neural crest cells. It is a thin region and forms approximately one-tenth of the gland.
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The adrenal glands, located on the cephalad portion of each kidney (see figure Adrenal Glands), consist of a. Cortex. Medulla. The adrenal cortex and adrenal medulla each have separate endocrine functions.