Local blood flow regulation
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Acute local blood flow regulation refers to the rapid control of arterial vasomotion usually based on the metabolic needs of the surrounding cells. Although cardiac output may remain the same, blood flow to individual cells is chiefly dependent on the cells' need for nutrients.
For example, during exercise such as running, the metabolic needs of the active leg skeletal muscles increase significantly. The muscle cells are in much more demand for nutrients such as oxygen. However, the body "reserves" as much blood as possible to the active tissues (in this case skeletal muscle). Therefore, during exercise more blood will flow to-and-from the muscle than it will in inactive tissue, such as the hand muscles. It is controlled by the local muscle metabolism,nervous regulation which may have direct effect by para sympathetic nervous system
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