The fibrous membrane forming the innermost of the three coverings that surrounds the brain within the cranial cavity that is firmly attached to the glial capsule. [ MP:0009026 ]

Synonyms: brain pia mater of neuraxis pia mater of brain pia mater of neuraxis of brain

This is just here as a test because I lose it

Term information

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external definition

The innermost of the three mammalian meninges covering the brain and spinal cord. [TFD][VHOG]

homology notes

In fishes, the meninges consist of a single membrane, the primitive meninx, wrapped around the brain and spinal cord. With the adoption of terrestrial life, the meninges doubled. In amphibians, reptiles, and birds, the meninges include a thick outer dura mater derived from mesoderm and a thin inner secondary meninx. (...) In mammals, the dura mater persists, but division of the secondary meninx yields both the arachnoid and the pia mater from ectomesoderm.[well established][VHOG]



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