noun[mass noun] Anatomy
The tissue which forms a single layer of cells lining various organs and cavities of the body, especially the blood vessels, heart, and lymphatic vessels. It is formed from the embryonic mesoderm. Compare with epithelium.
- Laughter appears to cause the tissue that forms the inner lining of blood vessels, the endothelium, to dilate or expand in order to increase blood flow.
- This endothelium helps give vessels the elasticity needed to regulate blood pressure.
- The endothelium is a layer of cells that line the undersurface of the cornea and are essential to keeping the cornea clear.
- Example sentences
- They consist of thin sheets of collagen and smooth muscle with an endothelial covering.
- Pulmonary endothelial cells serve as gatekeepers to trafficking inflammatory and immune cells.
- The staining was predominantly located in endothelial and perivascular cells within the tumors.
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