Hippocampus is connected to the hypothalamus by which structure?

The fornix is a large bundle of mainly projection fibres which connect the hippocampus with the mammillary body. It constitutes the sole efferent system of the hippocampus. The medial forebrain bundle (MFB), is a part of the reward system, containing fibers from the basal olfactory regions, periamygdaloid region septal nuclei, as well as fibers from the ventral tegmental area.