Assertion: mediastinum's heart | /r/CapableOf | enclose within the pericardium
Facets:
Source sentences:
text: heart enclosed within the pericardium, the ascending aorta, lower half of the superior vena cava with the azygos vein opening into it, the bifurcation of the trachea and the two bronchi, the pulmonary artery dividing into its two branches, the right and left pulmonary veins, phrenic nerves, some bronchial lymphatic glands, pericardiocophrenic vessels