Final answer:
The limbic system is a connected set of structures that regulates emotion and memory formation. One important structure within the limbic system is the amygdala.
Step-by-step explanation:
The limbic system is a connected set of structures that regulates emotion, as well as behaviors related to fear and motivation.
It plays a role in memory formation and includes parts of the thalamus and hypothalamus as well as the hippocampus.
One important structure within the limbic system is a temporal lobe structure called the amygdala.