Intrapleural space

Intrapleural space is the fluid-filled space between the two pulmonary pleurae (known as visceral and parietal) of each lung. A thin, slippery, two-layered membrane, it plays a vital role in respiration.

Anatomy

The intrapleural space is located between the two layers of the pleura, the thin membrane that lines the outer surface of the lungs (visceral pleura) and the inner surface of the chest wall (parietal pleura). This space is filled with a small amount of lubricating serous fluid.

Function

The main function of the intrapleural space is to allow the lungs to move smoothly within the chest during respiration. The serous fluid within the space serves as a lubricant, reducing friction between the two pleural layers as they slide against each other during breathing.

Clinical significance

Abnormalities in the intrapleural space can lead to medical conditions such as pleural effusion and pneumothorax. Pleural effusion refers to the accumulation of excess fluid in the intrapleural space, while pneumothorax is the presence of air or gas in the space.

See also

• Pleura
• Pleural effusion
• Pneumothorax
• Respiration (physiology)

References

Intrapleural space Resources
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