Definition:
The pericardium is a 2-layered membrane that surrounds the heart and the blood vessels near the heart.
A small amount of fluid is present between the layers of the pericardium which lubricates the heart, allowing it to beat safely within the chest.
Also Known As: lining of the heart
Examples:
After surgery for his lung cancer, Robert developed a pericardial effusion, a build up of fluid between the layers of the pericardium.
