Source:http://linkedlifedata.com/resource/umls/id/C0506706
FMA: Anatomical entity which has three or fewer spatial dimensions. Examples: hemoglobin molecule, mitochondrion, hepatocyte, erythrocyte, heart, head, blood, urine, peritoneal cavity, diaphragmatic surface of heart, inferior margin of liver, apex of lung.,UWDA: Anatomical entity which has three or fewer spatial dimensions. Examples: hemoglobin molecule, mitochondrion, hepatocyte, erythrocyte, heart, head, blood, urine, peritoneal cavity, diaphragmatic surface of heart, inferior margin of liver, apex of lung.