Question

what cns-associated structure is illustrated in this figure? a lateral section of the brain with cavities filled with fluid and a close-up of a structure. the close-up has a blood vessel surrounded by cylindrical cells with thin extensions turned away from the vessel and short outgrowths turned to the vessel. arachnoid villus cerebral aqueduct hypothalamus choroid plexus

Answer 1

The CNS-associated structure shown in the figure is the choroid plexus, consisting of cylindrical ependymal cells that produce CSF in the brain's ventricles.

Step-by-step explanation:

The CNS-associated structure illustrated in the figure with cavities filled with fluid is the choroid plexus. It consists of cylindrical ependymal cells that line blood capillaries. These cells have an essential role in filtering and absorbing components of the blood to produce cerebrospinal fluid (CSF). The ependymal cells, which have extensions and outgrowths for interacting with blood vessels, can be considered a component of the blood-brain barrier (BBB) or a place where BBB is not as restrictive to allow for CSF production. The choroid plexus is a specialized structure within the ventricles of the brain — cavities that are remnants of the embryonic neural tube — and is critical for the circulation of CSF throughout the CNS.