脑脊膜( meninges)脑脊膜分3层 Granulations arachnoidales (Pacchioni) Lacuna lateralis \, emissaria v. cerebri R. venae temp. superfic A. cerebri s Anastomosis venarum v, diploic 5点 Dura mater 、 Fasciculi arachnoidal \Spatium perivascular ( Virchow-Robin) Cortex cerebri Lamina limitans glia perivaseularis Sinus sagittalis superior A Cavum subarachnoidale Pia mater FaIx cerebri Arachnoidea脑脊膜(meninges)脑脊膜分3层：