This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'Hippocampus is connected to hypothalamus by which structure? \nSelect and explain. \nA. Fornix, B. Mammilary bodies, C. Median forebrain bundles, D. Septal nuclei', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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 pa of reward system, containing fibers from the basal olfactory regions, periamygdaloid region septal nuclei, as well as fibers from ventral tegmental area. (Reference: Vishram Singh textbook of clinical neuroanatomy Second Edition page 231)', 'role': 'assistant'}]