What is the function of the adrenal gland in human body?

Multifunctional: Very briefly, the adrenal gland can be divided between the cortex and medulla. The cortex makes a variety of hormones which control salt balance, cortisol, and androgens. The medulla primarily secretes norepinephrine and epinephrine. Functions of medulla and cortex are completely different as are the way their hormones are made and how they work.