what is the pericardium? know the layers. study blue
Pericardial disease, or pericarditis, is inflammation of any of the layers of the pericardium. The pericardium is a thin tissue sac that surrounds the heart and consists of: Visceral pericardium -- an inner layer that envelopes the entire heart; A middle fluid layer to prevent friction between the visceral pericardium and parietal pericardium
The heart's outer wall consists of three layers. The outermost wall layer, or epicardium, is the inner wall of the pericardium. The middle layer, or myocardium, contains the muscle that contracts.