Objectives
- Identify the three layers of meninges and describe their characteristics
- Name the different real or virtual spaces between the meninges
- Describe the contents of each space and understand their corresponding disorders
Introduction
- Protective membranes surrounding the central nervous system
- Completely enclosed bag within the spinal canal and the cranial cavity
- Mesoblastic origin
- Three layers:
- Two layers according to the embryology and pathology:
- Dura mater
or pachymeninx
- Leptomeninge, consisting of two layers : the arachnoid mater and pia mater
