NCIt related terms : Human Pericardium; Pericardial structure (body structure);
NCIt definition : A conical membranous sac filled with serous fluid in which the heart as well as the
roots of the aorta and other large blood vessels are contained.;
Alternative definition : CDISC: The membrane surrounding the heart and roots of the vessels at the base of
the heart.; UBERON: The combination of pericardial sac (a double-walled sac containing the heart
and the roots of the great vessels) plus fibrous pericardium.;