Where are they and what do they do? The adrenal glands are a pair of triangular-shaped organs that rest on top of the kidneys. They normally weigh about 5g each and have two parts. The cortex or outer section is responsible for the production of the hormones cortisone, cortisol, aldosterone, androstenedione, and dehydrepiandrosterone (DHEA). The medulla or central section secretes …