| 李宁,梁刚,刘婷婷.2011.中国大鲵胃肠道胚后发育的解剖学与组织学观察.动物学杂志,46(3):117-122. |
| 中国大鲵胃肠道胚后发育的解剖学与组织学观察 |
| Anatomy and Histology of Gastrointestinal Tract during Postembryonic Development of the Chinese Giant Salamander Andrias davidianus |
| 投稿时间：2010-11-18 修订日期：2011-03-02 |
| DOI： |
| 中文关键词: 中国大鲵 胃肠道 胚后发育 解剖学 组织学 |
| 英文关键词:Andrias davidianus Gastrointestinal tract Postembryonic development Anatomy Histology |
| 基金项目:陕西省自然科学基金项目(No.2007C114); |
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| 中文摘要: |
| 为了探讨中国大鲵( Andrias davidianus )胃肠道形成、分化及发育的基本特征,采用解剖学和组织学方法对其胃肠道胚后发育的形态结构变化进行了观察。结果表明,出膜第7天时的大鲵,胃肠道尚未分化,为一直管;出膜第21天时,已有胃和肠的分化;出膜第35天时,分化出了胃、小肠和大肠。出膜第7天时,胃肠道壁仅由黏膜上皮组成;出膜第21天时,胃壁由黏膜上皮、固有层、肌层和外膜组成,肠壁由黏膜上皮和肌层组成;小肠和大肠分别在出膜第77天及98天时分化出外膜,在出膜第98天和119天分别分化出固有层;出膜第180天时,胃肠道壁均具备了黏膜上皮、固有层、黏膜下层、肌层和外膜。 |
| 英文摘要: |
| Morphological changes of gastrointestinal tract during postembryonic development of the Chinese giant salamander Andrias davidianus were observed. The gastrointestinal tract was a straight tubular structure on the 7th day after hatching (DAH), and the differentiation between the stomach and the intestine was observed on the 21st DAH.On the 35th DAH, the stomach, small intestine and large intestine were observed. The structure of gastrointestinal tract was simple, only with mucous epithelium on the 7th DAH.On the 21st DAH, the stomach was composed of mucous epithelium, lamina propria, muscularis and adventitia, and the intestine consisted of mucous epithelium and muscularis. Adventitia of small intestine and large intestine were formed on the 77th and 98th DAH respectively, and lamina propria appeared on the 98th and 119th DAH respectively. On the 180th DAH, the gastrointestinal tract wall had mucous epithelium, lamina propria, submucosa, muscularis and adventitia. |
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