Adrenal gland
![](/Images/godic/202502/14/Illu_adrenal_gland4020.jpg")
![](/Images/godic/202502/14/1801_The_Endocrine_System4020.jpg")
![Section of human adrenal gland under the microscope, showing its different layers. From the surface to the center: zona glomerulosa, zona fasciculata, zona reticularis, medulla. In the medulla, the central adrenomedullary vein is visible.](/Images/godic/202502/14/Adrenal_cortex_labelled4020.jpg")
![Different hormones are produced in different zones of the cortex and medulla of the gland. Light microscopy at magnification × 204.[20]](/Images/godic/202502/14/1818_The_Adrenal_Glands4020.jpg")
The adrenal glands (also known as suprarenal glands) are endocrine glands that produce a variety of hormones including adrenaline and the steroids aldosterone and cortisol. They are found above the kidneys. Each gland has an outer cortex which produces steroid hormones and an inner medulla. The adrenal cortex itself is divided into three zones: zona glomerulosa, the zona fasciculata and the zona reticularis.