Question

Which cell types produce and help circulate cerebrospinal fluid?

1) Astrocytes
2) Microglia
3) Ependymal cells
4) Schwann cells
5) Oligodendroctes

Answer 1

Ependymal cells are responsible for producing and circulating cerebrospinal fluid (CSF) in the CNS, lining the brain's ventricles and forming part of the choroid plexus.

Step-by-step explanation:

The cell type that is responsible for the production and circulation of cerebrospinal fluid (CSF) in the central nervous system (CNS) is the ependymal cell. Ependymal cells line the ventricles of the brain, which are four central cavities, and form a part of the choroid plexus. These glial cells filter blood to produce CSF, and they have cilia on their surfaces to help circulate the fluid throughout the CNS. While the blood-brain barrier (BBB) restricts the exchange of components between the blood and nervous tissue, the ependymal cells represent a location where the BBB is permeable.