Simple Squamous
Heart and blood vessels
Endothelium is a simple squamous epithelial tissue that lines blood vessels. Mesothelium is a simple squamous epithelial tissue that surrounds the outside of our visceral organs.
A membrane/sac that that protects the body's major internal organs and allows them freedom of movement (for example, lung contractions).
The English term 'mesothelium' means epithelium originating in the embryonic mesoderm; lines the primordial body cavity