Adrenals glands located on the kidneys produce a variety of hormones. Adrenal gland is divided into two parts - adrenal cortex and adrenal medulla (innermost layer). Cortex is further divided into zona glomerulosa, zona fasciculata and zona reticularis.

Zona glomerulosa is the outermost layer and responsible for production of aldosterone that is a mineralocorticoid which maintains electrolyte and water balance in the body.

Carbohydrate metabolism is regulated by glucocorticoids secreted by the zona fasciculata of adrenal cortex.

Zona reticularis is responsible for secretion steroidal hormones.