Endothelium facts for kids

Kids Encyclopedia Facts
Endothelium
Microvessel.jpg
Endothelial cells, which form the tunica intima, encircle an erythrocyte (E).
Code TH H2.00.02.0.02003

Endothelium is a layer of cells that line the walls of the circulatory system which carries blood around the body. The cells form a membrane so that certain substances, such as nutrients, can move through the walls. In an adult human there is about 1 kg of endothelium cells, which would cover an area of about 7m2. The endothelium plays an important part in controlling the flow of blood around the body.

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Endothelium Facts for Kids. Kiddle Encyclopedia.