Intrapleural space

Intrapleural Space

The Intrapleural space (pronounced: in-tra-pleu-ral space), also known as the pleural cavity, is a potential space between the two pleurae of the lungs.

Etymology

The term 'Intrapleural' is derived from the Greek words 'intra' meaning 'within' and 'pleura' meaning 'side' or 'rib'. The term 'space' is derived from the Latin 'spatium' meaning 'room' or 'area'.

Definition

The intrapleural space is a thin, fluid-filled space located between the two pleural membranes: the visceral pleura and the parietal pleura. These membranes envelop the lungs, providing a smooth, frictionless surface that allows the lungs to expand and contract during respiration.

Function

The primary function of the intrapleural space is to allow the lungs to move freely within the thoracic cavity during respiration. The fluid within the space serves as a lubricant, reducing friction between the two pleural membranes. This space also creates a pressure gradient that aids in lung expansion.

Related Terms

Pleura: The serous membranes lining the thoracic cavity and enveloping the lungs.
Visceral pleura: The inner layer of the pleura that is in direct contact with the lungs.
Parietal pleura: The outer layer of the pleura that is attached to the chest wall.
Respiration: The process of inhaling and exhaling air in order to exchange oxygen and carbon dioxide between the lungs and the atmosphere.

External links

Medical encyclopedia article on Intrapleural space
Wikipedia's article - Intrapleural space

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Intrapleural space