Potential space

In anatomy, a potential space is a space that can occur between two adjacent structures that are normally pressed together. The pleural cavity, between the visceral and parietal pleura of the lung, is sometimes referred to as a potential space although, strictly speaking, it contains some fluid and is therefore an actual space, albeit a small one.

1. Guyton, Arthur (2006). Textbook of Medical Physiology. St. Louis: Elsevier Saunders. ISBN . 

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