Which of the following structures is NOT part of the limbic system?

The cerebellum is the correct choice, as it is not part of the limbic system. The limbic system is involved in emotion, memory, and behavior, and includes structures such as the amygdala, septum, and hippocampus.

The amygdala plays a crucial role in processing emotions like fear and pleasure. The septum is associated with reward and aversion, acting as a mediator for various emotional responses. The hippocampus is essential for memory formation and spatial navigation. In contrast, the cerebellum is primarily responsible for motor control, coordination, and balance, which positions it outside the functions of the limbic system. This distinction underscores the specific roles different brain regions play in overall neurological function.