Multiple choice

Blood vessels are lined with

  1. Mesothelium

  2. Endothelium

  3. Pericardium

  4. Myocardium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The endothelium is the thin layer of cells that lines the interior surface of blood vessels, forming an interface between circulating blood in the lumen and the rest of the vessel wall. These cells are called endothelial cells.

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