Parietal pleura
Encyclopedia
The portion of the pleura external to the pulmonary pleura
lines the inner surface of the chest
wall, covers the diaphragm, and is reflected over the structures occupying the middle of the thorax
; this portion is termed the parietal pleura.
The parietal pleura is attached to the wall of the thoracic cavity and innervated by the intercostal nerves
and phrenic nerve
.
Parietal pleura lines the thoracic wall, covers the superior surface of the diaphragm and separates the pleural cavity from the mediastinum
. The costal portion of the parietal pleura lines the inner aspect of the ribs and intervening intercostal muscles, being separated from them by endothoracic fascia
. This part of the parietal pleura is innervated by the intercostal nerves. The diaphragmatic portion of the parietal pleura overlies the diaphragm and is innervated by the phrenic nerve. The mediastinal portion of the parietal pleura forms the lateral wall of the mediastinum and is innervated by the phrenic nerve.
Pulmonary pleura
Each lung is invested by an exceedingly delicate serous membrane, the pleura, which is arranged in the form of a closed invaginated sac. A portion of the serous membrane covers the surface of the lung and dips into the fissures between its lobes; it is called the pulmonary pleura .The visceral...
lines the inner surface of the chest
Chest
The chest is a part of the anatomy of humans and various other animals. It is sometimes referred to as the thorax or the bosom.-Chest anatomy - Humans and other hominids:...
wall, covers the diaphragm, and is reflected over the structures occupying the middle of the thorax
Thorax
The thorax is a division of an animal's body that lies between the head and the abdomen.-In tetrapods:...
; this portion is termed the parietal pleura.
The parietal pleura is attached to the wall of the thoracic cavity and innervated by the intercostal nerves
Intercostal nerves
The intercostal nerves are the anterior divisions of the thoracic spinal nerves from T1 to T11.Each nerve is connected with the adjoining ganglion of the sympathetic trunk by a gray and a white ramus communicans...
and phrenic nerve
Phrenic nerve
The phrenic nerve originates mainly from the 4th cervical nerve, but also receives contributions from the 5th and 3rd cervical nerves in humans....
.
Parietal pleura lines the thoracic wall, covers the superior surface of the diaphragm and separates the pleural cavity from the mediastinum
Mediastinum
The mediastinum is a non-delineated group of structures in the thorax, surrounded by loose connective tissue. It is the central compartment of the thoracic cavity...
. The costal portion of the parietal pleura lines the inner aspect of the ribs and intervening intercostal muscles, being separated from them by endothoracic fascia
Endothoracic fascia
Endothoracic fascia is the layer of loose connective tissue deep to the intercostal spaces and ribs, separating these structures from the underlying pleura. This fascial layer is the outermost membrane of the thoracic cavity. The endothoracic fascia contains variable amounts of fat....
. This part of the parietal pleura is innervated by the intercostal nerves. The diaphragmatic portion of the parietal pleura overlies the diaphragm and is innervated by the phrenic nerve. The mediastinal portion of the parietal pleura forms the lateral wall of the mediastinum and is innervated by the phrenic nerve.
