Which of the following is most responsible for keeping the lung surface and the thoracic wall from separating?

Question

Quizplus · Accepted Answer

The intrapleural fluid is located between the lung surface and the thoracic wall and has a surface tension that acts to hold the two surfaces together. This is necessary to maintain the negative pressure in the intrapleural space, which is vital for proper lung function. Surfactant and the negative pressure in the alveolar space play important roles in maintaining the structure and function of the lungs, but they are not directly responsible for keeping the lung surface and the thoracic wall from separating. The force exerted by the external intercostal muscles and the difference between alveolar and atmospheric pressures are involved in ventilation, but they do not directly contribute to preventing separation of the lung surface and the thoracic wall.

Which of the Following Is Most Responsible for Keeping the Lung