くも膜まく下か腔くう

く

も

ま

く

か

く

う

Meanings

1

noun

subarachnoid space

anatomy

Anatomical term for the space between the arachnoid mater and the pia mater, filled with cerebrospinal fluid.

くも膜まく下か腔くうには脳のう脊せき髄ずい液えきが存そん在

ざい

する

。

Cerebrospinal fluid is present in the subarachnoid space.

くも膜まく下か腔くうの拡かく大だいが画が像ぞうで確かく認にんされた。

Enlargement of the subarachnoid space was confirmed on imaging.

Kanji

膜membrane
下below, down, descend
腔body cavity
蜘spider
蛛spider

Related words

くも膜まく
Refers to the arachnoid mater itself, one of the meninges; くも膜下腔 is the space beneath it.
硬膜下腔こうまくかくう
Subdural space, located between the dura mater and arachnoid mater, as opposed to the subarachnoid space.

Written forms

くも膜まく下か腔くう
Standard medical kanji spelling using くも for 'spider' and 膜 for 'membrane'.
クモ膜まく下か腔くう
Katakana variant of the spider part, sometimes seen in medical contexts.
蜘蛛くも膜まく下か腔くう
rarely-used kanji form
Full kanji spelling using 蜘蛛 for 'spider'; rarely used and marked as such.

Etymology

Compound of くも (spider) + 膜 (membrane) + 下 (under) + 腔 (cavity), calque of the anatomical term 'subarachnoid space'. The arachnoid mater is named for its spiderweb-like appearance.