Now, in this diagram, we have our respiratory system. We have the windpipe, also known as the trachea, which by furcates at the bottom, it breaks down, it splits into the right bronchi and the left bronchi. And these bronchi connect to the right and our left lung. So the right lung and our left lung. Now remember, the lungs are actually enclosed in a double layer structure known as our pleura. So the outer membrane of the pleura is known as the parietal pleura.