Natural size, in SOMSO-PLAST®, after Prof. Dr. med. Dr. med. h.c. J. W. Rohen. The sinus of the brain (sinus durae matris) as well as the Pacchionian granulations are marked on the superior sagittal sinus of the falx cerebri, showing the drainage of the blood from the cerebral veins and ofthe cerebrospinal fluid. Cannot be disassembled.