Definition of Endothelium
Endothelium: A layer of flat cells lining the closed internal spaces of the body such as the inside of blood vessels and lymphatic vessels (that convey the lymph, a milky fluid) and the heart.
By contrast, the outside layer of cells that covers all the free, open surfaces of the body including the skin, and mucous membranes that communicate with the outside of the body is called the epithelium.
The word "endothelium" is derived from the Greek "endon," within + G. "thele," nipple.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 8/28/2013
Top RxList Drug News
- First US Case of E coli Resistant to Last-Resort Antibiotic
- FDA Approves Afstyla for Adults, Children With Hemophilia A
- FDA Approves New Diagnostic Imaging Agent to Detect Recurrent Prostate Cancer
- Drug Targeting Blood-Brain Barrier 'Hopeful' in Stroke
- FDA Approves Probuphine Implant for Opioid Dependence
Find out what women really need.