ANATOMY

Detailed explanation-1: -Your pericardial cavity is the space between the two layers of your serous pericardium. This space holds your pericardial fluid.

Detailed explanation-2: -A fibrous sac known as the pericardium surrounds the heart. This sac is made of two thin layers with a small amount of fluid between them. This fluid reduces friction between the layers as they rub against each other when the heart beats.

Detailed explanation-3: -Between the layers is the pericardial cavity, a potential space filled with 15-50 milliliters of serous pericardial fluid. Pericardial fluid is secreted by pericardial cells, and it is this fluid that reduces friction between the parietal and visceral layer during heart contractions.

Detailed explanation-4: -The pericardium consists of two layers: a visceral pericardium, which adheres to the external surface of the heart, and a parietal pericardium, in which a fibrous layer is formed by the visceral pericardium reflecting back on itself. The potential space between these two layers is called the pericardial cavity.