Three-dimensional organization of lymphatics in the dog stomach: A scanning electron microscopic study of corrosion casts
Three-dimensional organization of lymphatics in the dog stomach: A scanning electron microscopic study of corrosion casts
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DOI：
10.1679/aohc.59.61
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发表时间：
1996-03-01
影响因子：
--
通讯作者：
Ogata, T
中科院分区：
文献类型：
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作者：
Sugito, M;Araki, K;Ogata, T
本文用扫描电镜观察了犬胃粘膜和肌层内低粘度Mercox树脂直接注入胃粘膜和肌层的腐蚀模型。虽然胃中神经纤维的组织结构已被各种方法研究，但神经纤维的起源及其在各层中的连接尚未明确定义。在这项研究中，使用狗胃，因为它的结构与人类胃相似，我们定义了所有胃层中的淋巴结构，粘膜固有层的上三分之二中没有淋巴管。它们首先出现在固有层的最深处，紧邻粘膜肌层上方。这些淋巴管由单层不规则网状结构组成。由该网络产生的细长淋巴管穿过粘膜肌层并流入淋巴丛，淋巴丛由粘膜下层最上层的较厚淋巴管组成。淋巴管瓣在此丛中常见。从该丛起，细长的带瓣膜的连接淋巴管直接向下延伸，没有侧向交通，并在粘膜下层的最深层排入淋巴丛。后一种神经丛由大口径神经纤维组成，发出扁平的神经纤维，在肌肉层中形成三维网络。下视神经管由粗大的视神经管组成，走行曲折，汇入输出视神经管。
The three-dimensional organization of the lymphatics in the dog stomach was studied by scanning electron microscopy of corrosion casts, which were made by direct parenchymal injection of low-viscosity Mercox-resin into the mucosa and the muscular layers. Although the organization of lymphatics in the stomach has been studied by a variety of methods, the origin of the lymphatics and their connection in each layer has not been clearly defined. In this study, using dog stomach because of its structural similarity to the human stomach, we defined the lymphatic structure in all gastric layers, with lymphatics absent in the upper two-thirds of the lamina propria mucosae. They were first encountered at the deepest level of the lamina propria, immediately above the lamina muscularis mucosae. These lymphatics were composed of single-layered irregular meshes. Slender lymphatics arising from this network passed through the lamina muscular is mucosae and drained into the lymphatic plexus, which was composed of thicker lymphatics at the uppermost layer of the submucosa. Lymphatic valves were frequently seen in this plexus. From this plexus, slender connecting lymphatics with valves extended straight downward without lateral communications and drained into the lymphatic plexus at the deepest layer of the submucosa. This latter plexus, composed of large-caliber lymphatics, issued flattened lymphatics which formed a three-dimensional network in the muscular layer. The subserosal lymphatics were composed of thick lymphatics with tortuous courses and drained into the efferent lymphatics.