Redistribution of blood flow

  • Created by: z_mills1
  • Created on: 05-06-14 15:33
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  • Redistribution of blood flow
    • Vascular shunt
      • redistribution of blood flow to the areas where it is most needed
      • the shunting of blood between competing tissues is achieved by
        • the opening (dilating) and closing (constriction) of the arterioles supplying the blood entering the capillary bed
    • control of blood shunting is regulated through the sympathetic nervous system
    • the redistribution of blood is controlled primarily by
      • Vasocontriction
        • decrease blood flow through narrowing
      • Vasodilation
        • increase blood flow through widening
    • structures which aid blood redistribution are pre-capillary sphincters
      • these are ring shaped muscles which lie t the opening of capillaries and control blood flow into the capillary bed


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