1. Plural of endothelium; the thin layer of cells that lines the inside of blood vessels, lymphatic vessels, and the heart.
Usage: medical/anatomical term; plural form

Examples

• The endothelia of the capillaries are responsible for nutrient exchange between blood and tissues.
• Damage to the endothelia can lead to increased vascular permeability.
• Researchers studied how endothelia respond to changes in blood flow.
• The endothelia lining the coronary arteries are critical for heart health.
• Inflammation can compromise the integrity of the endothelia throughout the circulatory system.