Definition

Relating to the thin layer of cells that line the blood vessels and organs in the body.

Example

The endothelial cells play a crucial role in maintaining vascular health.

Conversation

Did you know that endothelial cells line our blood vessels?

Really? I didn’t realize they had such an important role in our bodies.

Yes, they help regulate blood flow and maintain vascular health.

That’s fascinating! I’ll have to read more about endothelial functions.

Synonyms & Antonyms

Root Explanation

Endothelial → It is formed from "endo-" (meaning within) and "thele" (from Greek "thēlē", meaning nipple or projection). The term "endothelial" refers to the cells that line the interior surface of blood vessels and lymphatic vessels, thus being within these structures.

Memory Tip

Think of 'endo-' meaning 'within' and 'thele' referring to a 'projection' — this helps you remember that endothelial cells are those that line the inside of blood vessels.

Visually Confused Words