Science. 1  Chara (alga), a genus of algae in the family Characeae. 2  Chara (moth), a genus of moths in the family Noctuidae. 3  CHARA array, a telescope.  Beta Canum Venaticorum or Chara, a 1  star. Chara or Southern dogs, a constellation including Beta Canum Venaticorum and Cor Caroli.
/mesoÂ·theÂ·liÂ·um/ (-theÂ´le-um) the layer of cells, derived from mesoderm, lining the body cavity of the embryo; in the adult, it forms the simple squamous epithelium that covers all true serous membranes (peritoneum, pericardium, pleura).mesotheÂ´lial.
Peritoneum is the thin serous membrane that lines the walls of the abdominal and pelvic cavities and clothes the abdominal and pelvic viscera. It is the largest serous membrane of human body and has a rather complex arrangement.xtraperitoneal tissue: Between the parietal peritoneum and the fascial lining of the abdominal and pelvic walls, there is a layer of connective tissue called the extraperitoneal tissue. It varies in amount in different regions.