Subarachnoideal cavity
Cavum subarachnoideale
Definition
The subarachnoid cavity of the brain is the space between the arachnoid mater and the pia mater, filled with cerebrospinal fluid and containing blood vessels; in some regions, it enlarges to form the subarachnoid cisterns.
References
Evans HE, de Lahunta A. Miller’s anatomy of the dog, 4th edition, Elsevier Saunders, St Louis, 2012.