| gptkbp:instanceOf | gptkb:organ_system 
 | 
                        
                            
                                | gptkbp:alsoKnownAs | digestive tract alimentary canal
 
 | 
                        
                            
                                | gptkbp:associatedWith | gptkb:Crohn's_disease colorectal cancer
 ulcerative colitis
 irritable bowel syndrome
 gastroenteritis
 
 | 
                        
                            
                                | gptkbp:extendsTo | mouth anus
 
 | 
                        
                            
                                | gptkbp:function | digestion elimination of waste
 absorption of nutrients
 
 | 
                        
                            
                                | gptkbp:hasSection | lower gastrointestinal tract upper gastrointestinal tract
 
 | 
                        
                            
                                | gptkbp:includes | gptkb:large_intestine gptkb:small_intestine
 esophagus
 stomach
 rectum
 pharynx
 
 | 
                        
                            
                                | gptkbp:inHumans | present 
 | 
                        
                            
                                | gptkbp:inInvertebrates | present 
 | 
                        
                            
                                | gptkbp:innervates | enteric nervous system 
 | 
                        
                            
                                | gptkbp:inVertebrates | present 
 | 
                        
                            
                                | gptkbp:length | about 9 meters in adult humans 
 | 
                        
                            
                                | gptkbp:linedBy | mucous membrane 
 | 
                        
                            
                                | gptkbp:mainFunction | processing food 
 | 
                        
                            
                                | gptkbp:partOf | digestive system 
 | 
                        
                            
                                | gptkbp:receivesBloodFrom | gptkb:superior_mesenteric_artery gptkb:inferior_mesenteric_artery
 gptkb:celiac_artery
 
 | 
                        
                            
                                | gptkbp:studiedIn | gastroenterology 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Foreign_Object_Injury gptkb:Mantle_Cell_Lymphoma
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Gastrointestinal tract 
 |