Major Respiratory Organs: Major respiratory organs include the nose, pharynx, larynx, trachea, bronchi, and lungs, all working together to move air, filter particles, and facilitate gas exchange.
The Lung Pleurae: The lungs are enclosed by the pleuraetwo thin layers of serous membrane (visceral and parietal) separated by pleural fluidwhich reduce friction during breathing and help maintain lung expansion.