Raschke M
Chirurgische Klinik, Technischen Universität München, BRD.
Acta Anat (Basel). 1990;137(2):175-9. doi: 10.1159/000146880.
The blood vessels of the antrum area of human gastric tunica mucosa have been studied by scanning electron microscopy and compared with vertical and horizontal serial sections of perfusion-fixed antrum mucosa. In contrast to previous studies on the oxyntic corpus mucosa, where two superimposed capillary layers could be seen, the antrum mucosa presents only one capillary layer. It extends from the lymphatic follicles above the lamina muscularis mucosae up to the luminal surface. No further arterioles exist in the glandular part of the antrum mucosa. The luminal aspect of the capillaries show thin, honeycomb-like capillaries, differing from our previous findings in the corpus area. There the capillaries are wide and circulate in a dense, convoluted way. Arteriovenous anastomoses again could not be seen in the examined tissue. The differences in gastric microangioarchitecture might be explained by the extent of the glandular part in both regions. The findings in the antrum area very much resemble the basal capillary layer in the corpus mucosa. The critical height for one capillary layer in the glandular tissue of human gastric mucosa is estimated to be approximately 1 mm. Larger diameters, as in the oxyntic corpus mucosa, might require a second capillary layer.
利用扫描电子显微镜对人胃黏膜窦区的血管进行了研究，并与灌注固定的胃窦黏膜垂直和水平连续切片进行了比较。与先前关于胃体黏膜的研究不同，在胃体黏膜中可以看到两层叠加的毛细血管层，而胃窦黏膜仅呈现一层毛细血管层。它从黏膜肌层上方的淋巴滤泡延伸至腔面。胃窦黏膜的腺部不存在进一步的小动脉。毛细血管的腔面呈现出细小的蜂窝状毛细血管，这与我们先前在胃体区域的发现不同。在胃体区域，毛细血管较宽，以密集、盘绕的方式循环。在所检查的组织中再次未见到动静脉吻合。胃微血管结构的差异可能由两个区域腺部的范围来解释。胃窦区的发现与胃体黏膜的基底毛细血管层非常相似。据估计，人胃黏膜腺组织中一层毛细血管的临界高度约为1毫米。像胃体黏膜那样更大的直径可能需要第二层毛细血管。
