Summary Information: Pleural cavity. Pleural cavity: The pleural cavity is located inside the chest area and is the space that contains the lungs, pleura, pleural space, and pleural fluid.The pleural cavity and its components are important to healthy respiration.ummary Information: Pleural cavity. Pleural cavity: The pleural cavity is located inside the chest area and is the space that contains the lungs, pleura, pleural space, and pleural fluid.