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han_cam han_cam
wrote...
Posts: 8
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9 years ago
Which statements are TRUE?
      
Veins are low volume vessels, holding about 11% of the total blood volume at any moment.
      
Veins are high volume vessels holding about 60% of the total blood volume at any moment.
      
When arterial pressure falls, veins are caused to constrict by sympathetic activity, shifting blood to the arterial circulation and pressure.
      
A and B
      
B and C
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