the.com/pleura
the slippery double-layered cling wrap keeping your lungs from chafing against your own ribs
surface arealarger than the skin covering your whole body
vacuum tricknegative pressure inside keeps lungs inflated
two layersvisceral hugs lung, parietal lines the chest
slick fluidonly teaspoons lubricate every single breath
pain alarminflamed pleura makes breathing a stabbing affair