| arachnoid mater | Like a cobweb, covered with or consisting of soft fibres or hairs so entangled as to give a cobwebby appearance. (09 Oct 1997) |
|---|---|
| arachnoid mater cranialis | That portion of the arachnoid which lies within the cranial cavity and surrounds the brain and the cranial portion of the subarachnoid space. In several sites it is relatively widely-separated from the pia mater, creating the cranial subarachnoid cisterns. Synonym: arachnoid mater cranialis, arachnoid mater encephali, cerebral part of arachnoid. (05 Mar 2000) |
| mater | The "sheltering" coverings of the central nervous system. Origin: L. Mother (05 Mar 2000) |
| pia mater | <anatomy> The delicate and highly vascular membrane immediately investing the brain and spinal cord. Origin: NL, fr. L. Pia (fem. Of pius tender, kind) + mater mother. Source: Websters Dictionary (01 Mar 1998) |