The pericardial fluid provides some protection against shock and injury. In addition, it helps decrease friction at the outer surface of the heart.
Friction around the heart and possible damage.
Pericardial fluid is a fluid that is secreted by the serous membrane on the pericardious sac on the outside of the heart.
Pericardial effusion is the medical term meaning abnormal accumulation of fluid in the pericardial space. If the fluid affects the function of the heart, it's called cardiac tamponade. When this sac becomes filled with fluid, the liquid presses on the heart, preventing the lower chambers of the heart from properly filling with blood.
The pericardial fluid acts as a lubricant and reduces friction between the opposing surfaces as the heart beats (contacts). The pericardial fluid is secreted by the pericardial membranes.
The pericardial space is located in between the parietal and visceral pericardium, contains 10-20 ml of fluid to cushion and protect the heart.
Friction around the heart and possible damage.
Normally there is approx 25mL of fluid in the pericardial sac. As little as 100-200mL of rapidly accumulating fluid can cause problems with the normal function of the heart
The pericardial sac (or pericardium) is a dual-walled sac that contains the heart and the roots of the great vessels (vena cavae, pulmonary arteries, pulmonary veins, aorta, brachiocephalic arteries and veins, carotid artery and subclavian artery).
Pericardial cavity
Encloses cardiac space.
The pericardial fluid
Pericardial cavity
The pericardial sac.
aspiration of pericardial fluid for diagnostic purposes or treating cardiac tamponade
The pericardial space lies between the pericardium and the epicardium.
Pericardial effusion.
The heart is located in the pericardial and belongs to the cardiovasular system.