荥经长毛兔消化道计量组织学观察

本文采用大体解剖、石蜡组织切片技术和Spot321图像分析系统对荥经长毛兔消化道各段进行了观察研究.结果显示:荥经长毛兔消化道具典型草食动物结构特性,口腔内具发达的牙齿,上蜃纵向开裂;食道粗短,黏膜表皮角质化;胃囊状膨大,黏膜皱褶发达;小肠长,肠绒毛发达;大肠较长,无肠绒毛.各段管腔壁由内向外依次分为黏膜、粘膜下层、肌层、浆膜(外膜)四层结构,各部位的主要区别在于黏膜层,此外,粘膜下层、肌层的相对厚度等也存在差异.荥经长毛兔消化道的解剖学和组织学结构与其食草性功能密切相关.

QUANTITATIVE HISTOLOGICAL OBSERVATION OF THE DISGESTIVE TRACTS OF XINGJING ANGORA RABBITS

This article tries to analyze and research the alimentary canals of Xingjing Angora rabbits by the methods of groee anatomy,paraffin tissue section and Spot321 image dissector system.Results show that the Xingjing Angora rabbits are typical herbivores.There are developed teeth in their mouths,and their upper lips crack vertically.The esophagus,whose mucous epidermals keratinizate,are short and thick.The stomachs are voluminous like bags and the mucosas are abundant.There are lots of intestinal villus in their small intestines,which are very long.The large intestines are relatively long and in particular caecums are thick and big.Paragraphs cavity walls can be divided into four layer structures:mucosa;submucosa;muscle layer and serosal from the inside out,and their main differences lie in mucous layers,submucosas as well as muscular layers.This study shows that Xingjing Angora rabbits’ anatomical and histologic structural characteristics of digestive tracts are similar to those of the ordinary rabbits,and structural characteristics of the entire digestive tract are closely connected with functions of eating grass.