A focus on the gross morphological and ultrastructural characteristics of the oesophagus and stomach of Eurasian common moorhen (Gallinula chloropus chloropus, Linnaeus 1758),Microscopy Research and Technique

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A focus on the gross morphological and ultrastructural characteristics of the oesophagus and stomach of Eurasian common moorhen (Gallinula chloropus chloropus, Linnaeus 1758)
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2021-04-14 , DOI: 10.1002/jemt.23777
Basma G Hanafy ₁

Affiliation

The present work was the first attempt to examine the oesophagus and stomach of the Eurasian common moorhen grossly and by SEM. The oesophagus was composed of long cervical and short thoracic parts. The longitudinal folds of the cervical part were narrower than that of the thoracic part, while the depressions between these folds were shallower and wider in the cervical part. On the epithelial surface of the oesophagus, micropapillae were present and they were numerous and smaller at the level of the cervical part. The openings of the oesophageal glands were circular at the level of the cervical part and oval to elliptical at the thoracic part. The crop was absent. The proventriculus was fusiform in shape; its mucosa was arranged in several, concentrically arranged mucosal folds connected with each other by transverse folds. The proventriculus glands were oval and opened by raised papillae on the epithelial surface. The gizzard was oval; its mucosa was lined by a horizontal layer of cuticle appeared like the fish scales, while the vertical part of the cuticle appeared as thin rods. The folds of the oesophagus are functioning for the expansion for the passage of the food particles. The tunica musculosa of the gizzard was thick to help in grinding of the food particles.

中文翻译：

重点关注欧亚常见沼鸡（Gallinula chloropus chloropus，Linnaeus 1758）食道和胃的大体形态学和超微结构特征

目前的工作是第一次尝试通过扫描电镜粗略地检查欧亚普通海鸡的食道和胃。食管由长颈段和短胸段组成。颈部纵褶较胸廓窄，而这些褶皱之间的凹陷在颈部较浅且较宽。在食管的上皮表面，存在微乳头，在宫颈部分的水平上，它们数量多而小。食管腺开口在颈部水平呈圆形，在胸部呈卵圆形至椭圆形。庄稼不见了。腺胃呈梭形；其粘膜呈多条同心圆状排列的粘膜皱襞，由横皱襞相互连接。胃腺呈椭圆形，由上皮表面凸起的乳头打开。胗呈椭圆形；它的粘膜内衬着一层水平的表皮，呈鱼鳞状，而表皮的垂直部分呈细棒状。食道的褶皱起到扩张食物颗粒通过的作用。胼胝的肌层很厚，有助于磨碎食物颗粒。

更新日期：2021-04-14

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