Quick Facts
The fornix is a fibrous arch connecting the mammillary bodies, septum and anterior nucleus of the thalamus to the hippocampus. It forms part of the limbic system and is important in the formation of memories and recognition of words and scenes.
The crus of fornix (aka posterior pillar of fornix) is the part of the fornix that projects forward behind the thalamus.
Related parts of the anatomy
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Vaginal Fornix
The vagina is a tubular structure extending cranially from the transverse fold of the external urethral orifice to the vaginal fornix around the cervix.
