This specimen of a dissected and opened cranial cavity displays the dural folds and dural venous sinuses, including the falx cerebri (preserved by a retained midsagittal portion of the calvaria). The intact tentorium cerebelli demonstrates the tentorial notch which normally houses the midbrain. Across the dural folds the following sinuses are visible: superior sagittal sinus, inferior sagittal sinus, straight sinus, transverse sinuses, superior and inferior petrosal sinuses, sphenoparietal sinuses and the cavernous sinuses. In the region of the sella turcica, the entry of the carotid arteries to the cranial cavity through the roof of the cavernous sinuses is also visible.
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