What are the adrenal glands and what do they do?

Endocrine gland: The adrenal glands sit on top of the kidneys and their main function is to make hormones. The adrenal glands make hormones in response to stress (cortisol, epinephrine), hormones that affect kidney function and blood pressure (aldosterone), and sex hormones (androgens). These hormones circulate all around the body to affect the target organs and tissues.

Endocrine glands: Adrenal glands are small triangular shaped glands that sit on top of your kidneys and produce neurotransmitters (epinephrine/norepinephrine), corticosteroids, and mineralcorticoids. They have many effects on the body, including salt/water balance, blood sugar balance, energy metabolism, and immune system regulation.