Krasnyĭ R Ia
Arkh Anat Gistol Embriol. 1984 Apr;86(4):26-34.
By means of injecting the vessels with 0.2% solution of silver nitrate after Ranvier, solutions of Indian ink and gas soot, impregnation after V.V. Kuprianov, the blood vessels of the rectal wall have been studied. The material has been obtained from 50 corpses of persons of various age, not suffering from any diseases of the gastrointestinal tract. The structural organization of the microcirculatory tract has been studied layer-by-layer, at all levels by means of atraumatic lamination of the tunics. Terminal links of the microcirculatory bed form zonal functional complexes of microvessels specific for each part of the rectum. They regularly repeat in a certain tunic and owing to this the whole organization of the microcirculatory bed acquires features of a definite polymeric structure which consists of homonomic complexes of microvessels. Their regularity, as regards their topography and quantity, definitely differs in each tunic and layer of the rectal wall. Precapillary sphincters and arteriolovenular anastomoses are revealed; they perform an active regulation of blood circulation in the organ. Diameters of the microvessels and density of the microcirculatory network have some slight fluctuations (differences) in functionally poorly active tunics of the rectal wall--the serous and submucous, especially in its rectosigmoid part. Differences of these parameters are especially expressed within the limits of the rectal ampule and its mucous and muscular tunics.
通过用硝酸银0.2%溶液（在郎飞氏结之后）、印度墨水和煤气烟灰溶液注入血管，以及采用V.V.库普里亚诺夫的浸染法，对直肠壁的血管进行了研究。材料取自50具不同年龄、无胃肠道疾病的尸体。借助各层膜的无创伤分层，逐层研究了微循环道的结构组织。微循环床的终末环节形成了直肠各部分特有的微血管带状功能复合体。它们在某一层膜中规律地重复出现，因此微循环床的整体组织呈现出由微血管同型复合体组成的特定聚合结构的特征。它们在地形和数量方面的规律性在直肠壁的每一层膜和每一层中都有明显差异。发现了毛细血管前括约肌和动静脉吻合支；它们对器官内的血液循环起到积极调节作用。在直肠壁功能活动较弱的膜——浆膜和黏膜下层，尤其是在直肠乙状结肠部分，微血管直径和微循环网络密度有一些轻微波动（差异）。这些参数的差异在直肠壶腹及其黏膜和肌层范围内尤为明显。
