Define choroid plexus??

The choroid plexus is a network of blood vessels located within the ventricles of the brain. It is responsible for producing cerebrospinal fluid (CSF), a clear fluid that surrounds and protects the brain and spinal cord. The choroid plexus consists of specialized cells called ependymal cells, which are responsible for the production and secretion of CSF. The CSF produced by the choroid plexus helps to cushion the brain, remove waste products, and provide nutrients to the central nervous system.