Peritoneum of coelom is an example of

The peritoneum of coelom is a single layer of simple squamous mesothelial cells resting on a loose connective tissue containing blood vessels, lymphatics, and nerves. Anatomically, the peritoneum is divided into a parietal and visceral peritoneum. The parietal peritoneum lines the diaphragm, abdominal walls, and pelvic cavity.