Autoregulation, veins, venous return, capillaries, endothelial cells, endothelial dysfunction, shear stress, blood-borne substances, nitric oxide, prostacyclin

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Colorado State University
Biomedical Science
BMS 360
Douglas Ishii

28 FebruaryAutoregulationActive hyperemiaExerciseincreased release of metabolites decreased O levels2 glucose O2 lactic acid ATP K ions H ions CO2Increase in blood flow as a result through arteriolar dilationProminent in skeletal muscle and brainVeinsMost of the blood in the body is present in veinsMajor functionregulation of cardiac output through venus returnVeins are low resistance high complianceCompliance of veins is much greater than that of arteriesFactors Influencing Venous ReturnSympathetic nervous systemIncreased in SNS outputdecreased complianceSkeletal muscle pump think legsFlow valves only allow flow towards heartMuscles contract vein is squeezedDriving force towards heartRespiratory pumpDuring respiratory inspiration VR increases because of a decrease in right atrial pressureBreath indiaphragm dropspressure in thoracic cavity drops
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