The function of the meninges includes which one of the following?
A. Regulation of extracellular fluid content
B. Protection of the brain and spinal cord
C. Circulation of cerebrospinal fluid
D. All of the above
ANS: D
Rationale: The cerebrospinal fluid system consists of both the cerebrospinal fluid and the meninges. The meninges contain spaces called dural sinuses, which contribute to the return of blood and cerebrospinal fluid to the venous blood system. The meninges also provide buoyancy and protection to the brain and spinal cord, as well as regulate extracellular fluid content.
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