subarachnoid space
1
7.3
- noun
- /ˌsʌbəˈræk.nɔɪd speɪs/
- Specialized
:
espacio subaracnoideo
- A role for brain-derived vasoactive factors released in the subarachnoid space and acting on pial arterioles was also excluded (Ngai and Winn, 2002).
Examples
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The subarachnoid space is then opened to release spinal fluid from the cisterna lateralis.
Academic text (1996) -
As the blood filled what I would learn was the subarachnoid space between her brain and its first outer membrane, the brain itself went into survival mode and neglected to make memories.
Blog text (16) -
OK, You say it's in the subarachnoid space surrounding the brain.
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You can see that subarachnoid cap as the cord is pushed away and the subarachnoid space is widened above and below the lesion.
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Retraction could also tear the bridging veins, which could bleed into the subdural or subarachnoid space.
Academic text (2004) -
Bupivacaine heavy (0.5%) injected in subarachnoid space at L4-5 interspace.
Academic text (2007) -
As is the case with any meningoencephalocele, our diagnosis was based on the identification of a sac that was directly contiguous with the subarachnoid space and that contained a component of herniated cerebrum.
Academic text (2004) -
The treatment is for spinal cord (intrathecal, in the subarachnoid space—deeper than epidural) injections.
Blog text (16) -
The subarachnoid space contains cerebrospinal fluid that cushions the brain and spinal cord.
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Doctors often analyze the fluid in the subarachnoid space for signs of infection or bleeding.
Surface Forms
Morphology
The noun's meaning follows directly from its constituents: 'subarachnoid' (situated below the arachnoid membrane) plus 'space' (a physical area) yields 'the space beneath the arachnoid membrane'. Although technical medical vocabulary, the composition is fully transparent and would be understandable to learners who know both constituent words and the anatomical reference.
Etymology
Subarachnoid space is a name you can read literally: sub- means 'under', arachnoid is a thin, web-like layer around the brain, and space means a 'gap'. This gap under that web-like layer holds fluid that cushions the brain and spinal cord, so the name tells you where it is and what it does.