Pericardium

(per-e-kar’ -de-uni)[izepi, around; Kapdia, hearj:]. The closed membranous sac enveloping the heart. Its base is attached to the central tendon of the diaphragm; its apex surrounds for a short distance the great ve els arising from the base of the heart. It consists of an outer fibrous coat, derived from the cervical fascia, and an inner serous coat. The sac normally contains from 5— 2° grams of clear serous liquid. The part in contact with the heart (visceral P.) is termed the epicardium, the other is the parietal P. P., Bread-and-butter, a peculiar appearance produced in fibrinous pericarditis, by the rubbing of the two surfaces of the membrane over each other. P., Shaggy, a pericardium upon which, as the result of fibrinous pericarditis, thick, loose, shaggy layers of fibrin are deposited. 487