capable of existence ends during digestive system process fully formed stage 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 WBbt:0005748 uberon galen:DigestiveSystem TADS:0000170 FBbt:00005055 MIAA:0000018 BTO:0000058 FMA:7152 MESH:D004064 UBERON:0001007 digestive MA:0002431 alimentary tract gastrointestinal system MAT:0000018 BILA:0000082 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 EFO:0000793 GAID:278 Anatomical system that has as its parts the organs devoted to the ingestion, digestion, and assimilation of food and the discharge of residual wastes. gut ncithesaurus:Digestive_System TAO:0000339 ZFA:0000339 circulatory system nervous system skeletal system musculoskeletal system biliary system exocrine system hematopoietic system immune system integumental system hepatobiliary system entire sense organ system excretory system