Blood Vessels

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  • Created by: HLeiper
  • Created on: 10-04-14 14:24
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  • Blood Vessels
    • Arteries
      • Walls are strong and elastic - high pressure
      • Small Lumen
    • Capillaries
      • Very small - carry blood as close to every cell as possible
      • Permeable walls one cell thick - diffusion in and out
      • Very small lumen
    • Veins
      • Bigger Lumen - helps blood flow
      • Elastic Fibres and Smooth Muscle - low pressure
      • Valves - blood flows in the right direction

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