An arachnoid mater that is part of a midbrain [Automatically generated definition]. [ OBOL:automatic ]
Synonyms: midbrain arachnoid midbrain arachnoid mater of neuraxis arachnoid mater of neuraxis of midbrain arachnoid of midbrain arachnoid mater of midbrain
Term information
- EMAPA:17792
- MA:0001059
- VHOG:0000233
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]