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Qu'est-ce (qui) est arachnoid - définition
WIKIMEDIA DISAMBIGUATION PAGE
Arachnoid (disambiguation)
arachnoid
[?'rakn??d]
¦ adjective like a spider or arachnid.
¦ noun (also arachnoid membrane) Anatomy the fine middle membrane of the three surrounding the brain and spinal cord, situated between the dura mater and the pia mater.
Origin
C18: from mod. L. arachnoides, from Gk arakhnoeides 'like a cobweb', from arakhne 'spider'.
Arachnoid
·noun The arachnoid membrane.
II. Arachnoid ·noun One of the Arachnoidea.
III. Arachnoid ·adj Resembling a spider's web; cobweblike.
IV. Arachnoid ·adj Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.
V. Arachnoid ·adj Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.
Arachnoid mater
![The arachnoid mater lies under the [[dura mater]], and arteries and veins run on top of it.](https://commons.wikimedia.org/wiki/Special:FilePath/Sobo 1909 590.png?width=200 "The arachnoid mater lies under the [[dura mater]], and arteries and veins run on top of it.")
![The [[medulla spinalis]] and its membranes.](https://commons.wikimedia.org/wiki/Special:FilePath/Gray767.png?width=200 "The [[medulla spinalis]] and its membranes.")
WEBLIKE MIDDLE LAYER OF THE THREE MENINGES
Arachnoid (brain); Arachnoidea; Arachnoid membrane; Arachnoid layer; Arachnoidal; Arachnoid cell; Arachnoidal cell; Arachnoid membranes; Arachnoid matter
The arachnoid mater (or simply arachnoid) is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is so named because of its resemblance to a spider web.
Wikipédia
Arachnoid
Arachnoid may refer to:
- Relating to arachnids
- Arachnoid (astrogeology), a geological structure found only on the planet Venus
- Arachnoid (botany), referring to organs with a cobwebby exterior appearance
- Arachnoid granulation, small protrusions of the arachnoid mater
- Arachnoid mater, a layer of the meninges, membranes that contain the central nervous system
