The pericardium (from the Greek περί, "around" and κάρδιον, "heart") 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.
近义、反义、联想词
近义词
n.
serous membrane, serosa
英英词典
visceral pericardium n.
the innermost of the two layers of the pericardium