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近年来,内脏循环的生理和病理生理学引起人们注意,关于胃、小肠和肝脏的血流控制、毛细血管交换和氧摄取的认识进展甚大,但对结肠的研究不够.本文概述结肠血液循环的内外调节及病变时的障碍.生理学基础血流动力学静息时结肠血流量低于小肠,为8～75ml/min·100g,近侧结肠高于远侧,直肠血流量约为结肠的2倍.结肠肌层血管与粘膜及粘膜下层血管平行,但粘膜和粘膜下层的血管究系平行或连续尚未肯定.血流在肠壁各层的分布有利于代谢活跃的粘膜-粘膜下层,吸收部位的血
In recent years, the physiology and pathophysiology of the visceral circulation have drawn people’s attention, and the understanding of the blood flow control, capillary exchange and oxygen uptake in the stomach, small intestine and liver has progressed greatly, but the study on the colon is not enough. Regulation and pathological barriers .Basic physiology hemodynamics at rest colon blood flow is lower than the small intestine, 8 ~ 75ml / min · 100g, proximal colon higher than the distal, rectum blood flow is about 2 times the colon. Colonic myometrial vessels and mucosal and submucosal blood vessels parallel, but the mucosa and submucosa of the vascular line parallel or continuous not yet determined.The distribution of blood flow in the intestinal wall is conducive to the metabolism of active submucosa - submucosa, the absorption of blood