part of part of develops_from serous membrane simple squamous epithelium mesoderm mesothelium AEO:0000111 BTO:0002422 CALOHA:TS-1183 EHDAA2_RETIRED:0003111 EHDAA:2331 EHDAA:2349 EHDAA:295 EHDAA:6073 EHDAA:640 EHDAA:646 EMAPA:32856 FMA:14074 MA:0000565 Simple squamous epithelium of mesodermal origin which lines serous membranes. Examples: mesothelium of pleura, mesothelium of peritoneum[FMA]. http://en.wikipedia.org/wiki/ The mesothelium is a membrane that forms the lining of several body cavities: the pleura (thoracal cavity), peritoneum (abdominal cavity including the mesentery) and pericardium (heart sac). Mesothelial tissue also surrounds the male internal reproductive organs (the tunica vaginalis testis) and covers the internal reproductive organs of women (the tunica serosa uteri). UBERON:0001136 UMLS:C0086610 uberon meso-epithelium