Final answer:
The claim that ependymal cells have cilia which assists in circulating cerebrospinal fluid (CSF) is true. Ependymal cells, which are glial cells with cilia, line the brain's ventricles and move CSF within the central nervous system.
Step-by-step explanation:
The statement that ependymal cells have cilia, which helps circulate cerebrospinal fluid (CSF), is true. These cells are a type of glial cell located in the brain and spinal cord that play a crucial role in the production and circulation of CSF. Ependymal cells line the ventricles of the brain, and part of their function is facilitated by the cilia on their surface. The cilia are microscopic extensions supported by microtubules that beat in unison to move fluids, in this case, the CSF through the ventricular system of the brain and around the CNS.
The CSF is produced in the choroid plexuses found in all four ventricles, where ependymal cells filter blood to make CSF. This fluid then circulates through the ventricular system and eventually flows into the subarachnoid space through apertures, ensuring that the CSF can circulate around the CNS. Thus, the movement of the cilia on ependymal cells is essential in maintaining the circulation of CSF within the central nervous system.