The visual system is the part of the central nervous system which gives organisms the ability to process visual detail, as well as enabling the formation of several non-image photo response functions. It detects and interprets information from visible light to build a representation of the surrounding environment.
For the endothelium of the cornea, see corneal endothelium. Endothelium is a type of epithelium that lines the interior surface of blood vessels and lymphatic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.It is a thin layer of simple squamous cells called endothelial cells.Endothelial cells in direct contact with blood are called vascular endothelial cells, whereas those in direct contact with lymph are known as lymphatic endothelial cells.hese functions include fluid filtration, such as in the glomeruli of the kidney, blood vessel tone, hemostasis, neutrophil recruitment, and hormone trafficking. Endothelium of the interior surfaces of the heart chambers is called endocardium.
The structure of the vessels have distinguishing features from arterial side to venous side (primarily muscle type or lack of muscle). The 5 different types of vessels have a different design of these 3 layers: 1) Tunica Interna (intima) - the inner lining of a blood vessel that is in contact with the blood. It's composed of simple squamous epithelium known as endothelium. There's also a basement membrane which is the vessels guide to repair, helps set-up for repair. The internal elastic lamina has window like openings that help allow things to diffuse out of the blood.