Pia arachnoid | Article about pia arachnoid by The Free Dictionary
pia arachnoid[′pī·ə ə′rak‚nȯid]
The outer meninx of certain submammalian forms having two membranes covering the brain and spinal cord.
References in periodicals archive
Leptomeningeal melanocytes are normally found in the pia arachnoid
, which covers the base of the brain, the caudal medulla, and cervical spinal cord.