Assertion: pia mater | /r/HasProperty | internal
Facets:
Source sentences:
text: The three membranes covering the spinal cord and brain: dura mater (external), arachnoid (middle), and pia mater (internal).
text: The three membranes covering the spinal cord and brain: dura mater (external), arachnoid (middle), and pia mater (internal).
text: The three membranes covering the spinal cord and brain: dura mater (external), arachnoid (middle), and pia mater (internal).
text: The three membranes covering the spinal cord and brain: dura mater (external), arachnoid (middle), and pia mater (internal).