arachnoid mater; arachnoid membrane
Anatomical term for the middle layer of the meninges surrounding the brain and spinal cord.
The arachnoid mater is one of the three layers of membrane that protect the brain.
A subarachnoid hemorrhage requires emergency treatment.
subarachnoid hemorrhage; SAH
Standard kanji-kana mixed spelling for the arachnoid mater.
Katakana variant of the first element, sometimes used in medical contexts.
Full kanji spelling; rarely used.
From くも (spider) + 膜 (membrane), calque of New Latin 'arachnoidea mater', so named because of its web-like appearance.