A bezel is a narrow piece of metal used to hold a gem in place on a piece of jewelry. The bezel surrounds the gemstone all the way around. A bezel is also the part of the watch surrounding the crystal on a watch face that holds the crystal in place. Bezels may or may not be set with gems and may or may not be textured.
The lungs are surrounded by a double membrane called pleura. This membrane has two layers, a parietal pleura and a visceral pleura. The parietal pleura is attached to the chest wall and the visceral pleura covers the surface of the lungs.Between these layers of pleura is a potential space i.e. a space that doesnât exist but it could exist if something goes wrong.his membrane has two layers, a parietal pleura and a visceral pleura. The parietal pleura is attached to the chest wall and the visceral pleura covers the surface of the lungs.
Pleura refers to the cavity that surrounds and protects the human lungs. Pneumonia may cause the two membranes that make up the pleural cavity to rub together.Physicians examinine chest radiographs before to determine if a patient's pleura has been compromised. View slideshow of images above.he pleural cavity is the cavity that surrounds human lungs. It is made up of two membranes that are separated by fluid called pleurae.