Starting stage<br><br>A.= transparent skull as seen from the side,B. = detached wall dura with specializations seen from the side,C. = detached wall dura with specializations viewed from below)The pictures illustrate how the dura is glued to the base, walls and ceiling of the skull cavity -"wall dura"- and partly, in the middle line, gives rise to the cerebral sickle (falx cerebri) which hangs down between the hemispheres, forming a lid, the cerebellar tent (tentorium cerebelli),  over the cerebellum in the posterior skull pit. The arrows point famously at the forehead.

Step 1.

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Brain Dissection 7: The hard meninges.