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The suprarenal glands, also known as adrenal glands, belong to the endocrine system. They are a pair of triangular-shaped glands, each about 2 in long and 1 in wide, that sit on top of the kidneys (see the image below).
They are located on top of each kidney. Their name directly relates to their location (adânear or at; renesâkidneys). Each adrenal gland is comprised of two distinct structuresâthe outer part of the adrenal glands is called the adrenal cortex. The inner region is known as the adrenal medulla. Hormones of the Adrenal Glands