the cerebrospinal fluid is formed by the
Formation: Clinical and experimental observation has established that the cerebrospinal fluid (CSF) is mainly formed by secretion from the choroid plexuses of the cerebral ventricles. Circulation: That formed by the plexuses of the lateral ventricle passes through the interventricular formina into the third ventricle.ormation: Clinical and experimental observation has established that the cerebrospinal fluid (CSF) is mainly formed by secretion from the choroid plexuses of the cerebral ventricles. Circulation: That formed by the plexuses of the lateral ventricle passes through the interventricular formina into the third ventricle.