noun. an epithelium of mesoblastic origin; a thin layer of flattened cells that lines the inside of some body cavities.
Example sentences of the word endothelium
1. Noun, singular or mass
The way to keep your blood vessels strong is to keep the endothelium healthy.
Another study published in the same journal in 2008 shows that artichoke protects endothelium cells by suppressing the formation of reactive toxins that occur as byproducts of normal metabolism.