INTRAMURAL VASCULAR SYSTEM OF THE LARGE-I NTESTINE OF MAMMALS - A STUDY OF THE LITERATURE

From a morphological point of view, too, the summarizing synopsis of t he intramural vascular system of the large intestine of mammals shows, that the functional aspect is prominent. As in other studied species the exclusively on the epithelial side existing 'fenestrated endotheli um' of the pericryptal and subepithelial capillaries is doubtless the most important structural mark of the large intestinal function, too. Moreover, the direction of the mucosal capillary blood flow informs, t hat at first the release of the essential substances for the glandular secretion will take place, before epithelial transports concerning th e resorption occur. As for the hemodynamic regulatory structures in th e wall of the blood-vessels there are obviously differences in their e xistence depending on the species, respectively they are completely ab sent such as in the ruminants. Finally, it should be mentioned, that a rterio-venous anastomoses could not be detected.