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.
At the tissue level, membranes form a barrier or interface (basement membranes that separate epithelia from connective tissues). On another level, epithelia and connective tissues combine to form membranes that cover and protect other structures and tissues.Types of membranes:1  Mucous membranes line cavities that connect with the exterior, including the digestive, respiratory, reproductive, and urinary tracts.n another level, epithelia and connective tissues combine to form membranes that cover and protect other structures and tissues. Types of membranes: 1  Mucous membranes line cavities that connect with the exterior, including the digestive, respiratory, reproductive, and urinary tracts.