pituitary gland

US /pɪˈtuːɪtɛri ɡlænd/
UK /pɪˈtuːɪtɛri ɡlænd/
"pituitary gland" picture
1.

a pea-sized gland located at the base of the brain that plays a crucial role in regulating various bodily functions and the activity of other endocrine glands

:
The pituitary gland is often called the 'master gland' because it controls several other hormone glands in the body.
Problems with the pituitary gland can lead to various hormonal imbalances.