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Caption = Posterior wall of the pericardial sac, showing the lines of reflection of the serous pericardium on the great vessels.
Caption2 = A transverse section of the
thorax, showing the contents of the middle and the posterior mediastinum. The pleural and pericardial cavities are exaggerated since normally there is no space between parietal and visceral pleura and between pericardium and heartParicardium is also known as cariac epidemis.
MeshName = Pericardium
MeshNumber = A07.541.795
The pericardium is a double-walled sac that contains the
heartand the roots of the great vessels.
There are two layers to the pericardial sac: the
fibrous pericardiumand the serous pericardium. The serous pericardium, in turn, is divided into two layers, the "parietal pericardium", which is fused to and inseparable from the fibrous pericardium, and the "visceral pericardium", which is part of the epicardium. The epicardium is the layer immediately outside of the heart muscle proper (the myocardium).
In between the parietal and visceral pericardial layers there is a
potential spacecalled the pericardial cavity. It is normally lubricated by a film of pericardial fluid. Too much fluid in the cavity (such as in a pericardial effusion) can result in pericardial tamponade, compression of the heart within the pericardial sac.
Pericarditisresulting in pericardial friction rub
Pericardial effusionwhich may lead to cardiac tamponade.
The 10th century CE Islamic mystic
Hallajdescribed God as He "who flows between the pericardium and the heart, just as the tears flow from the eyelids." ["Mystical Dimensions of Islam" (1975), Schimmel, Annemarie, University of North Carolina Press, pg. 71]
title=Mystical Dimensions of Islam
publisher=University of North Carolina Press
* - "Mediastinum: Pericardium (pericardial sac)"
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