So to see what we mean, let's take a look at the following simplified diagram of the lungs and our membrane. Now, this entire membrane that encloses our lungs is known as aroplora. So we have an outer membrane of the pleura, known as the parietal pleura. And we have the inner membrane of our pleura known as the visceral pleura. So the parietal pleura actually connects our lungs to outside organs of our body. For example, our ribcage and our visceral pleura actually connect to our two lungs.