serous membrane - a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluidpleura - the thin serous membrane around the lungs and inner walls of the chest tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects organs or cells of animals peritoneum - a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera endocardium - the membrane that lines the cavities of the heart and forms part of the heart valves pericardium - a double-layered serous membrane that surrounds the heart parietal pericardium - the tough outermost layer of the pericardium that is attached to the diaphragm and the sternum |