noun
pleura
PLOOR-uh/ˈplʊrə/
The membrane covering the lungs and lining the chest cavity.
The model shows the pleura covering the lungs and lining the chest.

Etymology
Greek pleuron named a rib, and its plural referred to the ribs or side of the body. The anatomical name applies that regional term to the membrane lining the chest and surrounding the lungs.
In context
it's a single sheet of pleura of a serous membrane on either side you have a single sheet over here and a single sheet over here and it covers the lungs
More examples
- The pleura helps the lungs move smoothly as you breathe.
- Inflammation of the pleura can cause sharp pain when breathing.
- Fluid sometimes collects between the two layers of the pleura.
Forms
pleura · pleurae · pleuras
pleural adjective — Relating to the membrane surrounding the lungs.