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Serous membranes have two layers. The parietal layers of the membranes line the walls of the body cavity (pariet- refers to a cavity wall). The visceral layer of the membrane covers the organs (the viscera). Between the parietal and visceral layers is a very thin, fluid-filled serous space, or cavity. [4]
Bowman's space (or "urinary space", or "capsular space")—Between the visceral and parietal layers, into which the filtrate enters after passing through the filtration slits. [1] Visceral layer—Lies just above the thickened glomerular basement membrane and is made of podocytes. Beneath the visceral layer lie the glomerular capillaries.
The visceral and parietal pleurae, like all mesothelia, both derive from the lateral plate mesoderms. During the third week of embryogenesis , each lateral mesoderm splits into two layers. The dorsal layer joins overlying somites and ectoderm to form the somatopleure ; and the ventral layer joins the underlying endoderm to form the ...
The serous membrane that covers the surface of the lung is the visceral pleura and is separated from the outer membrane, the parietal pleura, by just the film of pleural fluid in the pleural cavity. The visceral pleura follows the fissures of the lung and the root of the lung structures.
The parietal and visceral peritonea are named according to their location and function. The peritoneal cavity, derived from the coelomic cavity in the embryo , is one of several body cavities, including the pleural cavities surrounding the lungs and the pericardial cavity around the heart.
The pleural space, between the visceral and parietal pleura of the lung, is a potential space. [1] Though it only contains a small amount of fluid normally, it can sometimes accumulate fluid or air that widens the space. [ 2 ]
The parietal serous pericardium, which lines the interior side of the superficial portion of the pericardial sac, is fused to and inseparable from the fibrous pericardium The visceral serous pericardium , also known as the epicardium , covers the myocardium of the heart [ 8 ] and can be considered its serosa .
The inner layer, the visceral peritoneum, is wrapped around the visceral organs, located inside the intraperitoneal space for protection. It is thinner than the parietal peritoneum. The mesentery is a double layer of visceral peritoneum that attaches to the gastrointestinal tract. There are often blood vessels, nerves, and other structures ...