A delicate membrane enveloping the brain and spinal cord. It lies between the PIA MATER and the DURA MATER. It is separated from the pia mater by the subarachnoid cavity which is filled with CEREBROSPINAL FLUID.
Entry Term(s)
Arachnoid Mater
NLM Classification #
WL 200
Public MeSH Note
2015; for TENTORIUM CEREBELLI see SPINAL CORD 2015-2019
History Note
2015; for TENTORIUM CEREBELLI use SPINAL CORD 2015-2019
A delicate membrane enveloping the brain and spinal cord. It lies between the PIA MATER and the DURA MATER. It is separated from the pia mater by the subarachnoid cavity which is filled with CEREBROSPINAL FLUID.
