东方蝾螈胃和小肠的组织结构观察

目的]观察东方蝾螈胃和小肠的组织结构。方法]制作组织切片,利用显微镜观察组织结构。结果]东方蝾螈的胃壁和小肠壁由内向外依次可分为黏膜层、黏膜下层、肌层、浆膜层4层,小肠黏膜下层不明显。黏膜层向腔内形成纵褶,且较厚,肌层主要由内环外纵2层平滑肌构成。小肠绒毛由黏膜上皮和固有膜向肠腔突出形成,在十二指肠段密集且较高,向远端（回肠端）渐疏渐短。结论]东方蝾螈胃和小肠的形态结构较简单,胃肠壁较薄,肌层欠发达。

Histological Observation of Stomach and Small Intestine of Cynops orientalis

Objective]To observe the histological structure of the stomach and small intestine of Cynops orientalis.Method]Slices of stomach and small intestine of Cynops orientalis were prepared,and then observed by microscope.Result] The Stomach wall and small intestine wall of Cynops orientalis were made up of four concentric layers,which were mucosa,submucosa,muscular,serosa ento-ectad.The submucosa of small intestine wall was obscured.The thicker mucosal folds to cavity were formed.The muscular layer was constr...