Question

which of the following does cerebral spinal fluid (csf) not flow through as it baths the brain?
central canal of the spinal cord
inferior sagittal sinus
cerebral aquaduct
subarachnoid space

Explanation:

Trace cerebrospinal fluid flow

Using the Cerebrospinal Fluid Circulation knowledge point

Cerebrospinal fluid (CSF) is produced in the ventricles, flows through the cerebral aqueduct to the fourth ventricle, and enters the subarachnoid space and the central canal of the spinal cord.

Identify the exception

Using the Cerebrospinal Fluid Circulation knowledge point

CSF is reabsorbed into the dural venous sinuses (such as the superior sagittal sinus) via arachnoid granulations, but it does not flow through the inferior sagittal sinus as a fluid bathing the brain; the sinuses contain venous blood.

Answer:

• central canal of the spinal cord
• inferior sagittal sinus (Correct answer)
• cerebral aquaduct
• subarachnoid space