Ultrastructure of the choroid plexus epithelium of the brain

Federal State Budgetary Educational Institution of Higher Education “Saint Petersburg State University of Veterinary Medicine”, 5, st. Chernigovskaya, Saint Petersburg, 196084, Russia

^* Corresponding author: psevdopyos@mail.ru

Abstract

An electron microscopy of the brain lateral ventricles vascular plexuses of a bull was conducted. It was established that the vascular plexuses are lined with a single-layer epithelium. The study established that epithelial cells of the vascular bodies are secretory cells. The main function of these cells is to secrete cerebrospinal fluid. It was confirmed that these function determines a main features of their ultrastructural organization. These include the presence of a light nuclear matrix and the basal labyrinth. High mitochondrial activity and hyaline structure in the cytoplasm are also observed. This indicates high energy activity of cells, especially in the phase of cerebrospinal fluid secretion. The observed changes in organelles may be associated with pathological conditions (inflammation or ischemia).