TY - CHAP M1 - Book, Section TI - Venous Diseases of the Central Nervous System A1 - Morales-Vidal, Sarkis A1 - Schneck, Michael J. A1 - Ramirez-Zamora, Adolfo A2 - Dieter, Robert S. A2 - Dieter, Raymond A. A2 - Dieter, Raymond A. PY - 2011 T2 - Venous and Lymphatic Diseases AB - The veins of the brain contain no valves, and the vessel wall is slim because of the absence of the muscular layer. The veins penetrate the dura mater and drain into the cranial venous sinuses.1,2,3 The cerebral veins are divided into two main groups—cerebral and cerebellar. The cerebral veins drain the external and internal surfaces of the hemispheres. The cerebral veins that drain the external surfaces of the cerebral hemispheres are the superior, middle, and inferior superficial cerebral veins. The cerebral veins that drain the internal cerebral structures are mainly the internal cerebral vein and the basal vein of Rosenthal, which drain in the great vein of Galen. There are two pairs of cerebellar veins, the superior and the inferior cerebellar veins (Figure 15-1). SN - PB - McGraw-Hill Medical CY - New York, NY Y2 - 2024/04/19 UR - accesscardiology.mhmedical.com/content.aspx?aid=1126490324 ER -