Uberon definition : Membrane organ which is attached to the pericardial sac proper and the central tendon
of diaphragm and is continuous with the pretracheal fascia.[FMA];
Uberon synonym : fibrous portion of pericardium;
Uberon Structure note : most superficial part of pericardium; continuous with the outer adventitial layer
of the neighboring great blood vessels. [Wikipedia:Pericardium];