The 'master' gland of the human body is called the:

The pituitary gland is often referred to as the "master" gland of the human body. It is located at the base of the brain and is a critical part of the endocrine system. The pituitary gland secretes hormones that regulate a wide range of bodily functions, including growth, metabolism, and reproductive processes. It controls the function of other endocrine glands such as the thyroid, adrenal glands, and reproductive glands. Because of its broad regulatory functions, the pituitary gland plays a crucial role in maintaining homeostasis in the body.