FIGURE 1-10

     Clearly, there is an intimate relationship between CSF and the meninges so let's consider these tissues next. The outermost of the three layers is the dura - short for dura mater. It is a tough, fibrous layer, having the feeling and strength of canvas.To prepare this specimen, a large piece of dura was carefully pried away from the skull and left in place, covering the dorsal surface of the brain.