human_reference_atlas Homo sapiens anatomical system digestive system An anatomical system consisting of the alimentary canal and digestive glands responsible for intake, absorption, digestion and excretion of food.[AAO] EV:0100056 XAO:0000125 MA:0002431 digestive system alimentary tract gastrointestinal system WBbt:0005748 uberon galen:DigestiveSystem TADS:0000170 MAT:0000018 FBbt:00005055 BILA:0000082 SCTID:278859004 MIAA:0000018 BTO:0000058 AAO:0000129 alimentary system CALOHA:TS-1293 many anatomy ontologies consider gastrointestinal system synonymous with digestive system. here we follow MA in dividing digestive system into gastrointestinal and hepatobiliary. hepatobiliary includes the liver and biliary tract. species-specific AO classes are categorized according to whether liver is included. For example, XAO includes liver as part of XAO:0000125 alimentary system, so we assume this class is the more generic class FMA:7152 EFO:0000793 GAID:278 digestive system Wikipedia:Digestive_system Anatomical system that has as its parts the organs devoted to the ingestion, digestion, and assimilation of food and the discharge of residual wastes. MESH:D004064 ncithesaurus:Digestive_System gut TAO:0000339 AS ZFA:0000339 UBERON:0001007 digestive