The pleura is lined by a single layer of cells called mesothelial cells. These cells are derived from the embryonic mesoderm and form a smooth, glistening, and semi-transparent layer.
The pleura is a serous membrane that surrounds the lungs and chest wall, with two layers: the visceral pleura, which covers the lungs, and the parietal pleura, which lines the chest wall. Mesothelial cells are found on both layers of the pleura.
Other cells found in pleural fluid:
While mesothelial cells are the primary cell type in the pleura, other cells can also be found in the fluid between the pleural layers. These include:
- Macrophages: These cells are responsible for removing debris and foreign materials from the pleural space.
- Lymphocytes: These cells are part of the immune system and help to protect the body from infection.
- Neutrophils: These cells are also part of the immune system and help to fight infection.
- Eosinophils: These cells are involved in allergic reactions and the defense against parasites.
The proportion of different cell types in pleural fluid varies depending on the individual's health status and any underlying conditions.
