Which of the following is responsible for holding the lungs to the thorax wall? a. the visceral pleurae and the changing volume
of the lungs b. the diaphragm and the intercostal muscles alone c. the smooth muscles of the lung d. surface tension from pleural fluid and negative pressure in the pleural cavity
d. surface tension from pleural fluid and negative pressure in the pleural cavity
Explanation:
The thoracic cavity has three compartments: the mediastinum and two pleural cavities. The mediastinum is home to the heart, trachea, great vessels, and some other structures. The pleural cavities are on either side of the mediastinum and contain the lungs and the pleural linings.
<em>d) Surface tension from pleural fluid and negative pressure in the pleural cavity</em>
Explanation:
Pleural cavity can be described as the space which is present in between the pleura. Pleura can be described as the two thin membranes surround the lungs. These pleural cavity is responsible for holding the lungs to the thorax wall. It aids the functioning of the lungs at the time of breathing. It acts as a lubricant at the time of respiratory movements. Hence, the correct option is d.
