Pleural effusion, sometimes referred to as “water on the lungs,” is the build-up of excess fluid between the layers of the pleura outside the lungs. The pleura are thin membranes that line the lungs and the inside of the chest cavity and act to lubricate and facilitate breathing. What areRead More →

At the end of quiet inspiration, intrapleural pressure reaches about – 8 cm H20, and the transpulmonary pressure distending the lungs increases to 8 cm H2O . What is positive pressure in pleural space? During active expiration, the abdominal muscles are contracted to force up the diaphragm and the resultingRead More →