No5 Which brain structure serves as the major controller of the limbic system? 1 Hypothalamus Hippocampus Amygdala Mammillary body Fornix

The correct answer is the Fornix. The fornix is a bundle of nerve fibers that acts as a major output tract from the hippocampus, serving as the major controller of the limbic system. It plays a crucial role in the regulation of emotions, memory, and other functions associated with the limbic system.