It is the Pituitary Gland. The Pituitary gland is a major endocrine gland that is connected to the hypothalamus via the infundibulum.
the cerebellum
pubis
The Abdomen.The trunk contains the Thoracic cavity {containing the Pleural & Pericardial cavities} in the upper 1/3 of the trunk.The lower 2/3 of the trunk contains the Abdomino-pelvic cavity...
All endrocrine glands are located below the brain. If you mean the hypofyse though, that produces most of them.