双峰驼前胃腺囊区的组织学及腺细胞的超微结构

Histological structure and adenocyte ultrastructure of glandular saccus regions in proventriculus of Bactrian camel

用组织学、组织化学及电镜技术对双峰驼前胃腺囊区的组织结构和腺细胞的超微结构进行了观察。结果表明:双峰驼前胃3个腺囊区的组织构造基本一致,均由黏膜层、黏膜下层、肌层和浆膜组成。每个腺囊区都可分为有腺部和无腺部。有腺部表面衬以单层柱状上皮,固有层较厚,含较多的黏液腺,腺细胞主要为黏液细胞,另有少量的壁细胞和内分泌细胞,这些细胞的超微结构与牛、羊真胃贲门腺中的同类细胞相似。无腺部的构造与非腺囊区类似,表面被覆复层鳞状上皮,表层角化明显;固有层薄、无腺体分布;黏膜肌层薄且不连续。

Glandular saccus regions in proventriculus of 8 Bactrian camels from Nei Monggol Autonomous Region were studied on histology, histochemistry and electron microscopy. Results were as follows: Histological structures of three glandular saccus regions are basically consistant, which of them consists of tunica mucosa, submucosa, tunica muscularis and serosa. Every glandular saccus region is divided into glandular pars and non-glandular pars. Surface of the glandular pars is covered with simple cuboidal epithelium. The lamina propria is thick and has many mucous glands. The glandular cells include many( ) mucous cells and a few paritall cells and endocrine cells. These cells’ultrastructure is similar to the resembling cells of cardiac glands of bovine animals. The histological structure of non-glandular pars is similar to that of the regions of non-glandular sacs. The surface is covered with stratified columnar epithelium. The cutins is obvious. It has thin lamina propria and no glands. The muscularis mucosa isthin and not continuous.