The pleura is comprised of two layers: The visceral and parietal pleura join at the hilum, which serves as the point of entry for blood vessels, nerves, and the large airways of the lungs called ...

It’s grown into the chest wall, the chest wall’s inner lining (parietal pleura), the phrenic nerve (which controls the diaphragm), or the thin sac that surrounds the heart (parietal pericardium).

For example, the visceral pleura lines the lungs, and the parietal pleura covers the inner thoracic wall. In dogs, the pleural cavity exists as a potential space, with the visceral and parietal ...