How would decreased diffusion across the arachnoid granulations affect the volume of cerebrospinal fluid in the ventricles?
A)Decreased diffusion across the arachnoid granulations would decrease the volume of CSF in the ventricles because less CSF would reenter the bloodstream.
B)Decreased diffusion across the arachnoid granulations would decrease the volume of CSF in the ventricles because more CSF would reenter the bloodstream.
C)Decreased diffusion across the arachnoid granulations would increase the volume of CSF in the ventricles because less CSF would reenter the bloodstream.
D)Decreased diffusion across the arachnoid granulations would increase the volume of CSF in the ventricles because more CSF would reenter the bloodstream.
E)Decreased diffusion across the arachnoid granulations would not change the volume of CSF because the amount of CSF reentering the bloodstream can accommodate for the changes.

Question

Quizplus · Accepted Answer

Decreased diffusion across the arachnoid granulations would lead to less cerebrospinal fluid (CSF) being absorbed into the bloodstream. Since the arachnoid granulations are responsible for draining CSF from the subarachnoid space into the venous system, any decrease in their function would result in less CSF being removed from the central nervous system, thereby increasing the volume of CSF in the ventricles.

How Would Decreased Diffusion Across the Arachnoid Granulations Affect the Volume