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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).
Related terms: pericardium, inflammation of the heart membrane. The pericardium is a thin, sac-like covering (a membrane) that surrounds your heart. The outer layer of the pericardium surrounds the roots of your heart's major blood vessels.Ligaments attach this layer to your spinal column, diaphragm, and other parts of your body. The inner layer of the pericardium is attached to the heart muscle.ericarditis is inflammation of the pericardium, causing the amount of fluid between the two layers of the pericardium to increase. This increased fluid presses on the heart and restricts its pumping action.