list two features of parietal pleura
Each cavity (grey area) comprises a visceral layer (green) and a parietal layer (blue). The visceral layer is closely apposed to the lungs and cannot be dissected from the surface. The parietal layer is thicker and is attached to the walls of the thorax (e.g., diaphragm, ribs, etc). The layers are continuous at the hilum of the lung. Drawing of the pleural cavity showing the right lung (dark green) lined by visceral pleura (1) and parietal pleura (2) between which is the pleural sac (3).