Assertion: arachnoid | /r/HasProperty | situated outside the pia mater
Facets:
Source sentences:
text: The arachnoid is a delicate membrane which is situated outside the pia mater, and invests the brain and spinal cord much less ...
text: The arachnoid is a delicate membrane which is situated outside the pia mater, and invests the brain and spinal cord much less ...