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subarachnoid space

   Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia 0.01 sec.
subarachnoid space [¦səb·ə′rak‚nȯid ¦spās]
(anatomy)
The space between the pia mater and the arachnoid of the brain.


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The sinus receives blood from external and internal veins of the brain and the cerebrospinal fluid from subarachnoid space.
Introduction Schizencephaly is a rare CNS malformation consisting of a full-thickness CSF-filled parenchymal cleft lined by grey matter (pathognomonic) extending usually from the subarachnoid space to the subependyma of the lateral ventricles.
Normal flow and absorption through the subarachnoid space is dependent on proper CSF pressure in the head (called intracranial pressure).
 
 
 
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