Visceral serous membranes line organs. Parietal serous membranes line cavities.
Serous Membranes
The lubricating fluid secreted by the pleura is located between the two layers of the pleural membrane: the visceral and parietal pleura. This fluid helps reduce friction between the two layers during breathing movements.
(1) On February 8, 2012 at 5:57 am Mysandie [0] said:Learning a little Latin helped me to remember:"visceral" refers to inner"pari" = wall"peri" = around"epi" = upon"endo" = inside"myo" = muscleMost people think of the pericardium as just a double-layered, membranous sac (The Pericardial Cavity) that is around the heart. But, the pericardium is actually TRIPLE layered: the visceral layer, the parietal layer, and the fibrous layer (fibrosa).The visceral pericardium is the inner-most layer of the pericardium, and is also known as the Epicardium as it "lays" upon the heart.The Pericardial Cavity lies between the visceral pericardium and the parietal pericardium. This cavity is filled with pericardial fluid which serves as a shock absorber by reducing friction between the visceral and parietal layers. The parietal pericardium is an outer layering wall of the Pericardial Cavity between the pericardial membranes.The outer-most layer is the fibrous layer (fibrosa), and contains nerves, blood vessels, and lymphatics. This is the layer that can become inflamed, called pericarditis. (As opposed to, endocarditis, which is inflammation of the insidelayer of the heart.)
The serous membrane is composed of 2 thin linings. The inter lining, which directly covers the organ, is called the visceral membrane. Over the visceral is the parietal membrane. In between the two is a cushioning fluid. The serous membrane resembles a balloon (visceral) inside another balloon (parietal) with fluid between them.
The connection between the two layers is held together by surface tension. By interfering with this the lungs will not expand with each breath but they will collapse.
Pericardial cavity
Serous Membranes
sereous membrane
The membrane you are referring to is likely the serous membrane, which lines body cavities and surrounds organs. It consists of a parietal layer that lines the cavity wall and a visceral layer that covers the organ. These layers secrete a fluid that reduces friction between organs during movement.
The lubricating fluid secreted by the pleura is located between the two layers of the pleural membrane: the visceral and parietal pleura. This fluid helps reduce friction between the two layers during breathing movements.
The visceral and parietal layers are belong to a type of epithelial membrane called serous membranes. Serous fluid is a fluid between the two layers that helps them slide past each other without causing friction.
(1) On February 8, 2012 at 5:57 am Mysandie [0] said:Learning a little Latin helped me to remember:"visceral" refers to inner"pari" = wall"peri" = around"epi" = upon"endo" = inside"myo" = muscleMost people think of the pericardium as just a double-layered, membranous sac (The Pericardial Cavity) that is around the heart. But, the pericardium is actually TRIPLE layered: the visceral layer, the parietal layer, and the fibrous layer (fibrosa).The visceral pericardium is the inner-most layer of the pericardium, and is also known as the Epicardium as it "lays" upon the heart.The Pericardial Cavity lies between the visceral pericardium and the parietal pericardium. This cavity is filled with pericardial fluid which serves as a shock absorber by reducing friction between the visceral and parietal layers. The parietal pericardium is an outer layering wall of the Pericardial Cavity between the pericardial membranes.The outer-most layer is the fibrous layer (fibrosa), and contains nerves, blood vessels, and lymphatics. This is the layer that can become inflamed, called pericarditis. (As opposed to, endocarditis, which is inflammation of the insidelayer of the heart.)
The difference between these two pleura is that the parietal pleura is the outtermost covering of the lung which is adhered to the inner thoracic wall, while the visceral pleura is the lining which is directly adhered to the lung itself. The space between these two pleuras is know as the pleual cavity.
The parietal pleura lines the chest cavity and the visceral pleura covers the lungs. The parietal pleura is attached to the chest wall and diaphragm, while the visceral pleura is directly attached to the lungs.
The difference between these two pleura is that the parietal pleura is the outtermost covering of the lung which is adhered to the inner thoracic wall, while the visceral pleura is the lining which is directly adhered to the lung itself. The space between these two pleuras is know as the pleual cavity.
The peritoneal cavity is located in the abdominal cavity and is the space between the parietal and visceral peritoneum. It contains a small amount of fluid that helps reduce friction between the organs during movement.
The parietal pleura is the outer layer of the membrane surrounding the lungs, while the visceral pleura is the inner layer. The parietal pleura is attached to the chest wall and diaphragm, providing support and protection to the lungs. The visceral pleura is directly attached to the lungs, helping to maintain their shape and facilitate smooth movement during breathing. Both layers work together to create a fluid-filled space that allows the lungs to expand and contract efficiently during respiration.