The limbic system is the name given to the part of the brain consisting of the corpus callosum
, hypothalamus, and hippocampus. These regions play roles in regulating emotions, memory, learning, and the operation of the thoraco-abdominal organs. Often referred to as the emotional brain, the limbic system evaluates emotions produced by situations and sends the appropriate message: the production of hormones such as endorphins and adrenaline, and body reflex mechanisms. The limbic system retains memories and associates them to emotions.