Question

Ependymal cells ________?

1) are a type of neuron
2) are a type of macrophage
3) are the most numerous of the neuroglia
4) help to circulate the cerebrospinal fluid

Answer 1

Ependymal cells are glial cells that filter blood to produce cerebrospinal fluid (CSF) and help circulate it in the central nervous system (CNS).

Step-by-step explanation:

The ependymal cell is a type of glial cell that is responsible for filtering blood to produce cerebrospinal fluid (CSF) and helping to circulate the CSF through the central nervous system (CNS). Ependymal cells line the ventricles and come in contact with blood vessels in the choroid plexus, where they filter and absorb components of the blood to produce CSF.