Spinal arachnoid mater脊髓蛛网鹛 Characters a thin delicate. tubular membran loosely investing spinal cord Above it is continuous with cerebral arachnoid materSpinal arachnoid mater 脊髓蛛网膜 Characters ◼ A thin, delicate, tubular membran loosely investing spinal cord ◼ Above, it is continuous with cerebral arachnoid mater