Brain glucose level, blood oxygen level, and other parameters. These hypothalamic nuclei send output signals to motor areas that can generate actions to rectify deficiencies. Some of the outputs also go to the pituitary gland, a tiny gland attached to the brain directly underneath the hypothalamus. The pituitary gland secretes hormones into the bloodstream, where they circulate throughout the body and induce changes in cellular activity. The individual animals need to express survival-promoting behaviors, such as seeking food, water, shelter, and a mate. The motivational system in the brain monitors the current state of satisfaction of these goals, and activates behaviors
History of the location of the soul particular importance to the location of the soul was the 4th ventricle of the brain. In his treatise, "On Anatomy", "pneuma" was inhaled by the lungs and sent to the brain ventricles via the vessels of the body where the brain would convert it into what he called "psychic pneuma", or the soul, and produce thought, motion and all other animations of the body. Herophilus discovered the bumpy aspect of the walls of the ventricles of the brain that he called the choroid plexus and which was thought to be the interaction of the brain with the "pneuma" to create