Dentate gyrus

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Mesial temporal lobe

• Named because of its toothlike elevations

• The dentate gyrus, along with the hippocampus forms two parallel interlocking cylinders.

• Continuous
• Anteriorly with
• Band of Giacomini (aka tail of the dentate gyrus)
• Posteriorly as
• Fasciolar gyrus → indusium griseum → paraterminal gyrus
• Fasciolar gyrus
• Smooth grayish band that is located posteriorly to the splenium of the corpus callosum

• Dentate gyrus (14,3) is separated from
• Fimbria (9) of fornix (superiorly) by Fimbrodentate sulcus (12,5)

• Parahippocampal gyrus (9) (inferiorly) by Hippocampal sulcus (6)