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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).
Adrenal Glands. Your adrenal glands, which are perched atop your kidneys, are the source of a number of hormones, including epinephrine, norepinephrine, aldosterone and cortisol. Your adrenals are also an important source of androgens, or âmaleâ hormones, such as dehydroepiandrosterone, or DHEA, and androstenedione. The metabolic pathway that converts androgens to estradiol in your gonads is also at work in your adrenal glands.