Identifying the Master Gland in the Endocrine System

In the study of the endocrine system, several glands are known for their prominent roles in regulating various physiological functions through the secretion of hormones. Among these glands, one is particularly known as the 'master gland' due to its control over other endocrine glands and its essential function in the regulation of vital bodily functions such as growth, metabolism, and stress response.

Which endocrine gland is often referred to as the 'master gland'?