Blood–brain barrier
Videos
The blood–brain barrier is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between the circulatory system and the central nervous syst
Solute permeability at the BBB vs. choroid plexus
Astrocytes surrounding capillaries in the brain (artistic rendition)
Sketch showing constitution of blood vessels inside the brain
Endothelium
Videos
The endothelium is a single layer of squamous endothelial cells that line the interior surface of blood vessels and lymphatic vessels. The endothelium forms an interface between circulating blood or l
Blood–brain barrier
…The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between the circulatory system and the central nervous system, thus protecting the brain from…
Transmission electron micrograph of a microvessel showing endothelial cells, which encircle an erythrocyte (E), forming the innermost layer of the vessel, the tunica intima.
Endothelium lines the inner wall of vessels, shown here.