Noun: endothelium (endothelia) ,en-dow'thee-lee-um
- An epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities
"The endothelium of blood vessels plays a crucial role in regulating blood flow"
Derived forms: endothelia
Type of: epithelial tissue, epithelium
Encyclopedia: Endothelium, vascular