微循环是血液由微动脉到毛细血管和微静脉的流动，从生理学来看，微循环最重要的功能就是当血液通过毛细血管循环时，它向器官的每一个细胞提供营养物，并带走每个细胞的代谢物；同时，毛细血管内各种分子大小的物质也能穿过管壁进入周围的组织，并从周围组织返回毛细血管，微 Microcirculation is the flow of blood from the arterioles to the capillaries and venules. Physiologically, the most important function of the microcirculation is that as it circulates through the capillaries, it supplies nutrients to every cell in the organ and takes away Each cell metabolites; the same time, the capillary of various molecular size substances can also enter the surrounding tissue through the wall, and from the surrounding tissue to return to the capillary, micro