<P> The pericardium is a double - walled sac containing the heart and the roots of the great vessels . The pericardial sac has two layers , a serous layer and a fibrous layer . It encloses the pericardial cavity which contains pericardial fluid . </P>
<P> The pericardium is a double - walled sac containing the heart and the roots of the great vessels . The pericardial sac has two layers , a serous layer and a fibrous layer . It encloses the pericardial cavity which contains pericardial fluid . </P>
the fibrous sac covering of the heart which is in contact with the pleura is the
the fibrous sac covering of the heart which is in contact with the pleura is the
The pericardium
The pericardium