Pre Capillary Injury

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Furthermore, capillaries function as part of a capillary bed, a network of ten to one hundred capillaries that arises from a single met arteriole. Blood can flow through a capillary network from an arteriole into a venule in two ways: Capillaries: blood flows from an arteriole into capillaries and then into venues (postcapillary venules). There are junctions between the met arteriole and the capillaries which are called pre capillary sphincters, smooth muscle fibers, that control the flow of blood. When the pre capillary sphincters are relaxed (pen) blood flows into the capillaries; however, when pre capillary sphincters contract (partially, full close), blood flow ceases or decreases. Vasomotion, due to chemicals released by endothethial

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