The delicate serous membrane or membranous sac lining the dura mater, and enveloping the brain and spinal cord.
| 单词 | θ29051 |
| 释义 | the world > life > the body > nervous system > cerebrospinal axis > [noun] > membranes > arachnoid (6) arachnoid1839 The delicate serous membrane or membranous sac lining the dura mater, and enveloping the brain and spinal cord. Subcategories:— parts of (5) |
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