Blood and Lymphatic Vessel Layers

The vascular system includes blood vessels and lymphatic vessels. It forms a large network of arteries, capillaries, and veins. In the body, this system is divided into the blood system and the lymphatic system.

Blood vessels have three main histological layers. These layers are the tunica intima...

The innermost wall of all blood and lymph vessels comprises a single layer of endothelial cells that regulate the passage of molecules in and out of the fluid.

These cells are polarized in the direction of blood flow and separated from the outer layers by the basal lamina.

Endothelial cells and basal lamina form primary blood vesse...