primitive meninx
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meninx primitiva — primitive meninx loose embryonic mesenchyme surrounding the brain and spinal cord in the embryo; from it the three layers of the meninges are formed … Medical dictionary
meninx — Any membrane; specifically, one of the membranous coverings of the brain and spinal cord. SEE ALSO: arachnoid mater, dura mater, pia mater, leptomeninx. [Mod. L. fr. G. m., membrane] m. fibrosa rarely used … Medical dictionary
