The adrenal glands are located just above each kidney. They work together with the hypothalamus and pituitary glands in the brain to keep the human body in a stable, constant condition. The pituitary gland, often referred to as the “master” gland, is about the size of a pea and is considered the most important part of a system called the Endocrine System.
In general, the Endocrine System is in charge of body processes that happen slowly, such as cell growth. Faster processes like breathing and body movement are controlled by the Nervous System.
What normally happens is the hypothalamus produces something called “corticotrophin releasing hormone” or CRH. CRH then causes the pituitary gland to produce ACTH leading to the production of Cortisol and ADH by the adrenal glands.