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Fibrous Pericardium. Continuous with the central tendon of the diaphragm, the fibrous pericardium is made of tough connective tissue and is relatively non-distensible. This rigidity prevents rapid overfilling of the heart, but can have several serious clinical consequences (see cardiac tamponade).
The pericardium is a double walled sac that encloses the heart, and the proximal ends of the aorta, vena cava, and the pulmonary artery.The visceral layer is next to the heart, then a bit of fluid, and the parietal layer is outermost.In trauma, it can become filled with blood and impinge on the heart.olving the world's problems. . . one answer at a time. The pericardium is a double walled sac that encloses the heart, and the proximal ends of the aorta, vena cava, and the pulmonary artery. The visceral layer is next to the heart, then a bit of fluid, and the parietal layer is outermost.