abdomen chest http://upload.wikimedia.org/wikipedia/commons/d/db/Chest.jpg Subdivision of trunk proper, which is demarcated from the neck by the plane of the superior thoracic aperture and from the abdomen internally by the inferior surface of the diaphragm and externally by the costal margin and associated with the thoracic vertebral column and ribcage and from the back of the thorax by the external surface of the posterolateral part of the rib cage, the anterior surface of the thoracic vertebral column and the posterior axillary lines; together with the abdomen and the perineum, it constitutes the trunk proper[FMA]. UMLS:C1527391 thorax MIAA:0000295 pectus EMAPA:37232 EFO:0000965 EV:0100010 BTO:0001368 UMLS:C0817096 Wikipedia:Chest MAT:0000295 MA:0000031 GAID:91 UBERON:0001443 NCIT:C25389 NCIT:C12799 pectoral MESH:D013909 FMA:9576 galen:Chest thoracic galen:Thorax thoracic body wall CALOHA:TS-1039 anterolateral part of thorax front of thorax ventral part of thoracic region subdivision of trunk