What is contained in the pericardial cavity?
Serous fluid
The pericardial cavity is a space that is located between the parietal and visceral layers of the pericardium, which is a sac-like membrane that surrounds and protects the heart. The pericardial cavity is filled with a small amount of lubricating serous fluid, called pericardial fluid. The main purpose of this fluid is to reduce the friction between the heart and the surrounding pericardium during the beating of the heart. The pericardial fluid also helps to cushion and protect the heart from external shocks or trauma. Therefore, the pericardial cavity mainly contains pericardial fluid, which helps to maintain the normal functioning of the heart.
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