What are adrenal glands?

the adrenal glands (also known as suprarenal glands) are the triangular-shaped endocrine glands that sit on top of the kidneys. They are chiefly responsible for releasing hormones in conjunction with stress through the synthesis of corticosteroids and catecholamines, including cortisol and adrenaline (epinephrine), respectively. Though connected to the kidneys, these glands play no role in the functioning of, or health of the kidneys. Glands are part of the endocrine system, and kidneys are part of the urinary system.