human_reference_atlas part of Homo sapiens pericardium http://upload.wikimedia.org/wikipedia/commons/7/7e/Gray489.png uberon EMAPA:16133 pericardial VHOG:0001280 MAT:0000454 BSA:0000090 Peritoneum that surrounds the heart.[AAO] UBERON:0002407 EHDAA:5376 CALOHA:TS-0761 AS NCIT:C13005 SCTID:181295003 TAO:0000054 EV:0100023 UMLS:C0031050 pericardium XAO:0004182 FMA:9869 ZFA:0000054 galen:Pericardium we follow FMA in dividing pericardium into pericardial sac and fibrous pericardium The combination of pericardial sac (a double-walled sac containing the heart and the roots of the great vessels) plus fibrous pericardium. In GO the concept of pericardium is developmental implicitly epithelial, but here it represents a multi-tissue structure encompassing the sac (epithelium plus connective) and cavity pericardium BTO:0000717 this class denotes a combination of fibrous PC + PC sac (itself a combination of cavity, epithelium and connective tissue). Many sources use the term 'pericardium' to denote either just the serous membrane (ZFA) or the epithelium (GO) MA:0000099 EFO:0000820 RETIRED_EHDAA2:0001443 GAID:569 Wikipedia:Pericardium AAO:0010817 MESH:D010496 multicellular anatomical structure heart plus pericardium