Assertion: pericardium | /r/LocatedNear | muscular body of the heart
Facets:
Source sentences:
text: In scientific terms, the pericardium is a fibroserous, fluid-filled sack that surrounds the muscular body of the heart and the roots of the great vessels (the aorta, pulmonary artery, pulmonary veins, and the superior and inferior vena cavae).