A meninx that is part of a midbrain [Automatically generated definition]. [ OBOL:automatic ]
术语信息
- EHDAA2:0001174
- RETIRED_EHDAA2:0001109
- MA:0001058
- VHOG:0000012
- EMAPA:17791
- EHDAA:3708
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]