Serous Membrane

**Definition:** A thin lining of closed cavities of the body, consisting of a single layer of squamous epithelial cells (MESOTHELIUM) resting on a thin layer of CONNECTIVE TISSUE, and covered with secreted clear fluid from blood and lymph vessels. Major serous membranes in the body include PERICARDIUM; PERITONEUM; and PLEURA.

**Tree numbers:** - A10.615.789

**Synonyms:** - Serosa - Serous Membranes