|A transverse section of the thorax, showing the contents of the middle and the posterior mediastinum. The pleural and pericardial cavities are exaggerated since normally there is no space between parietal and visceral pleura and between pericardium and heart.|
|Gray's||subject #238 1087|
|Nerve||intercostal nerves, phrenic nerves|
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.
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. Denoted sections include:
- The diaphragmatic pleura. It, as well as the mediastinal pleura, is innervated by the phrenic nerve.
- The mediasteinal pleura. Different portions of the parietal pleura have received special names which indicate their position: thus, that portion which lines the inner surfaces of the ribs and intercostals is the costal pleura; the pleura lining the convex surface of the diaphragm is the diaphragmatic pleura; that which rises into the neck, over the apex of the lung, is the cupula of the pleura (cervical pleura); and that which is applied to the other thoracic viscera is the mediastinal pleura.
- The cervical pleura is one of the different portions of the parietal pleura that have received special names to indicate their position: thus, that which rises into the neck, over the summit of the lung, is the cupula of the pleura (cervical pleura).
- Different portions of the parietal pleura have received special names which indicate their position: thus, that portion which lines the inner surfaces of the ribs and Intercostales is the costal pleura.
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 in its central portion and by the intercostal nerves in its peripheral portion. The mediastinal portion of the parietal pleura forms the lateral wall of the mediastinum and is innervated by the phrenic nerve.
The parietal pleura is derived from the somatic mesoderm, and is highly sensitive to pain.
|Wikimedia Commons has media related to Parietal pleura.|
- -1288372165 at GPnotebook
- thoraxlesson2 at The Anatomy Lesson by Wesley Norman (Georgetown University)
- Atlas image: lung_pleura at the University of Michigan Health System - "X-ray, chest, posteroanterior view"
- Atlas image: lung_lymph at the University of Michigan Health System - "Transverse section through lung"
- MedEd at Loyola Grossanatomy/thorax0/thor_lec/thor6.html
- Diagram at kent.edu