Please confirm that you are not located inside the Russian Federation
The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.
The pericardium is the flexible, two-layered sac that envelops the heart. The parietal pericardium is the outer layer of the pericardium, and the visceral pericardium is the inner layer.