Pleural dome
The pleural dome ( cupula pleurae ) is the part of the pleura ( pleura ) that protrudes over the first rib, the upper edge of the sternum and the clavicle . The upper tip of the lung also rests against it. In humans, the pleura extends backwards to the seventh cervical vertebra and extends beyond the collarbone by 2 to 3 cm and the connection between the first rib and sternum by about 4 cm. The scalene muscles border the pleural dome laterally , with muscle fibers of the scalene minimus muscle radiating into the pleural dome, the large cervical vessels towards the middle and the stellate ganglion towards the abdomen . The anterior surface of the pleural dome is traversed by the phrenic nerve , vena and internal thoracic artery and vertebral artery . The arm plexus is located upstream of the pleural dome . In the area of the pleural dome, the lungs are only protected by soft tissue and are easily vulnerable to stab wounds.
When breathing , the pleural dome is exposed to tensile forces. The endothoracic fascia connected to the pleura is therefore reinforced here, which is referred to as the suprapleural membrane ( Sibson's fascia ). In addition, there are band-like reinforcements to the vertebral bodies and ribs, known as Zuckerkandl bands , which stabilize the dome.
Individual evidence
- ↑ a b Waldeyer - Human anatomy. Walter de Gruyter, 17th edition 2009, ISBN 9783110221046 , p. 353.