3rd October 2019


How is cerebrospinal fluid formed and drained?

The cerebrospinal fluid (CSF) is produced from arterial blood by the choroid plexuses of the lateral and fourth ventricles by a combined process of diffusion, pinocytosis and active transfer. A small amount is also produced by ependymal cells.

Correspondingly, what is the pathway of the cerebrospinal fluid?

Beginning in the lateral ventricles, CSF flows through two passageways into the third ventricle. From the third ventricle it flows down a long, narrow passageway (the aqueduct of Sylvius) into the fourth ventricle.

How is the cerebrospinal fluid circulated around the brain and spinal cord?

Cerebrospinal Fluid Circulation and Absorption. CSF is formed within the ventricles by small, delicate tufts of specialized tissue called the choroid plexus. From the fourth ventricle it passes through three small openings (foramina) into the subarachnoid space surrounding the brain and spinal cord.

How is the flow of CSF?

CSF is produced mainly by a structure called the choroid plexus in the lateral, third and fourth ventricles. CSF flows from the lateral ventricle to the third ventricle through the interventricular foramen (also called the foramen of Monro). Protection: the CSF protects the brain from damage by "buffering" the brain.
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