Question

Explain cerebrospinal fluid flow. Include all cavities, spaces and openings to the dural sinus

Explain cerebrospinal fluid flow. Include all cavities, spaces and openings to the dural sinus

Homework Answers

Answer #1

Flow of cerebrospinal fluid:

  • Cerebrospinal fluid (CSF) is produced by the choroid plexus and it flows from the lateral ventricle to the third ventricle through interventricular foramen, also known as foramen of Monro.
  • The third and fourth ventricles are interconnected by cerebral aqueduct. So, CSF flows through it before flowing into the subarachnoid space.
  • From there, CSF flows into the subarachnoid space through foramen of Luschka and foramen of Magendie.
  • From there, CSF is absorbed into the blood stream at the arachnoid granulations in the superior sagittal sinus through arachnoid villi. The arachnoid membrane then emerges into dural sinuses.
  • From the dural sinuses, CSF flows back is filtered back into the blood to drain from the nervous system.

This is the pathway of flow of cerebrospinal fluid (CSF) into the dural sinus.

Thank you!

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