Here are some glands of the human endocrine system that you can use to answer the prompt:
*Adrenal gland - Found above the kidneys, this gland releases adrenaline, cortisol, and aldosterone. All of these hormones are essential to the body during high-pressure situations (e.g. aldosterone keeps sodium levels balanced and cortisol maintains stress levels).
*Pituitary gland - Found near the bottom of the brain, the pituitary gland is an incredibly small gland that produces hormones whose functions are to direct the release of hormones from other glands (confusing, right?). An example of this is the growth hormone, which controls how much we grow in a set amount of time.
*Hypothalamus - Located near the pituitary gland in the brain, this gland controls a variety of different hormones in an attempt to maintain homeostasis. For example, if you start overheating, the hypothalamus sends a chemical signal to our sweat glands that tells them to release sweat and let you cool down.
I hope I helped!