Meninges.
SVG by <a href="//commons.wikimedia.org/wiki/User:Mysid" title="User:Mysid">Mysid</a>, original by SEER Development Team <a rel="nofollow" class="external autonumber" href="https://training.seer.cancer.gov/stws_about.html">[1]</a>. Translated by <a href="//commons.wikimedia.org/wiki/User:Angelito7" title="User:Angelito7">Angelito7</a>, <a href="//commons.wikimedia.org/wiki/User:Jmarchn" title="User:Jmarchn">Jmarchn</a>
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Meninges-en.svg" title="File:Meninges-en.svg">File:Meninges-en.svg</a>