Blood Vessels

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  • Created by: ODunn
  • Created on: 14-02-17 14:49
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  • Blood Vessels
    • Arteries
      • Carry Blood away from the heart
      • Have thick muscular walls
      • Have small passageways for blood
      • Contains blood under high pressure
    • Veins
      • Carry blood to the heart
      • Have thin walls
      • Have larger internal lumen
      • Contains blood under low pressure
      • Have valves to prevent blood flowing backwards
    • Capillaries
      • Found in the muscles and lungs
      • Microscopic- one cell thick
      • Very low blood pressure
      • Gas exchange takes place here. Oxygen passes through the capillary wall and into the tissues, carbon dioxide passes from the tissues into the blood.

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