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