part of part_of intestine 肠(intestine) AAO:0000246 ANISEED:1235303 BSA:0000093 BTO:0000648 CALOHA:TS-0490 EFO:0000834 EMAPA:32874 EMAPA:35180 EV:0100071 FMA:7199 GAID:295 In zebrafish, No stomach, small intestine, or large intestine can be distinguished. However, differences can be found in the morphology of the mucosa columnar epithelial cells and the number of goblet cells, suggesting functional differentiation. The intestine has numerous folds that become progressively shorter in a rostral-to-caudal direction. Proportionally, these folds are significantly larger than the finger-like intestinal villi of mammals and other amniotes (Wallace et al. 2005). Columnar-shaped absorptive enterocytes are the most numerous in the zebrafish intestinal epithelium. Goblet cells are the second most populous epithelial cell type. MA:0000328 MA:0001524 MESH:A03.492.411 MIAA:0000043 Portion of the alimentary canal bounded anteriorly by the pyloric sphincter and posteriorly by the cloacal sphincter.[AAO] Segment of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine. TAO:0001338 The tract of the alimentary canal. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG] This class is probably too inclusive UBERON:0000160 UMLS:C0021853 VHOG:0000056 WBbt:0005772 XAO:0000129 ZFA:0001338 bowel bowel galen:Intestine intestinal intestinal tract intestinal tract uberon 在斑马鱼中，不能区分胃、小肠或大肠。然而，在粘膜柱状上皮细胞的形态和杯状细胞的数量上可以发现差异，这表明功能分化。肠有许多褶皱，在从吻侧到尾侧的方向上逐渐变短。成比例地，这些褶皱明显大于哺乳动物和其它羊水动物的指状肠绒毛（Wallace等，2005）。柱状吸收肠细胞在斑马鱼肠上皮中数量最多。杯状细胞是第二多的上皮细胞类型。 消化道从胃延伸到肛门的部分，在人类和其他哺乳动物中，由两部分组成，即小肠和大肠。 消化道的前部由幽门括约肌界定，后部由泄殖腔括约肌界定。[AAO] 消化道的管道。[Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG] 肠(bowel) 肠(bowel) 肠道 肠道 肠道 这个类可能太包容了 subdivision of digestive tract 消化道分支 alimentary part of gastrointestinal system 胃肠消化系统