摘要
目的 研究大鸨前胃及肌胃超微结构 ,为大鸨人工饲养提供理论基础。 方法 超薄切片透射电镜观察。 结果 在前胃粘膜柱状上皮细胞核上方分布着大量直径约 0 2～ 0 8μm的致密颗粒 ,核周围可见许多泡状结构。前胃乳头内腔上皮细胞则为柱状粘液细胞 ,核上方胞质中充满着大量的粘原颗粒。深腺细胞根据核形态及线粒体结构差别可分两种。肌胃粘膜及直管腺上皮细胞的圆形核上方形成许多分泌颗粒 ,根据其分泌颗粒的结构分为两种细胞 ,一种分泌颗粒为均质圆形 ,另一种为纤维状的。两种细胞形成的分泌物参与类角质膜的形成 ,在腺管底部至粘膜表面形成的类角质膜的超微结构有所不同。
Objective To provide the theoretical basis for artificially breeding of bustard, the ultrastructures of the proventriculus and the gizzard of bustard were studied. Method The ultrathin sections were observed under transmission electron microscope. Results There were various size of vacuoles around nucleus and a lot of dark granules about 0\^2～0\^8?μm in diameter in the apical cytoplasm of the columnar epithelium of the mucosa. The epithelium of the inner cavity of papilla consisted of the columnar mucous cells with a dense flat nucleus were occupied with a lot of mucin granules. The proventricular glandular epithelium can be divided into two types based on the differences between the shape of nucleus and structural features of mitochondria. Many granules occupied the apical cytoplasm and a spherical or oval nucleus located in the basal region of the gizzard glandular cell. Two cell types can be differentiated on the basis of the structure of secretive granules, homogeneous and fibrous. The secretion of both types of cells participated in formation of the keratin lining. The ultrastructure of the lining varied from basal region of gizzard gland to the mucosal surface. Conclusion These results suggested that the bustard possess much stronger digestive capability.
出处
《解剖学报》
CAS
CSCD
北大核心
2003年第1期103-105,共3页
Acta Anatomica Sinica
关键词
大鸨
前胃
肌胃
超微结构
Bustard
Proventriculus
Gizzard
Ultrastructure
