Which of the following is responsible for holding the lungs to the thorax wall are ________.
A) the visceral pleurae and the changing volume of the lungs
B) the smooth muscles of the lung
C) the diaphragm and the intercostal muscles alone
D) surface tension from pleural fluid and negative pressure in the pleural cavity

Question

Quizplus · Accepted Answer

The pleural fluid helps to maintain the negative pressure in the pleural cavity, which holds the lungs to the thorax wall. This negative pressure is created by the opposing forces of the elastic recoil of the lungs and the chest wall, which creates a vacuum-like effect that holds the lungs in place. The visceral pleurae also plays a role in holding the lungs to the thorax wall. Options A, B, and C are incorrect, as they do not accurately describe the mechanisms responsible for holding the lungs in place.

Which of the Following Is Responsible for Holding the Lungs