The factors responsible for holding the lungs to the thorax wall are .

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The factors responsible for holding the lungs to the thorax wall are surface tension from pleural fluid and negative pressure in the pleural cavity. The visceral pleura attaches directly to the surface of the lungs, while the parietal pleura lines the inner surface of the thoracic cavity. The small amount of fluid between the two pleural layers creates surface tension, which holds the lungs to the thorax wall. Negative pressure in the pleural cavity also helps keep the lungs in place by creating a suction effect. The diaphragm and intercostal muscles are involved in breathing, but they are not responsible for holding the lungs in place. Smooth muscles are found in the airways but do not play a role in holding the lungs to the thorax wall.

The Factors Responsible for Holding the Lungs to the Thorax