• Created by: Nathaniel
  • Created on: 03-05-13 17:24
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  • Biology
    • The Heart
      • Creates a lub dub sound
    • Blood transport systems
      • Arteries
        • Carry blood away form the heart
        • Has a thick wall with muscle fibres and elastic tissues
          • So the walls can stretch under the pressure from the heart and recoil helping the blood along
          • a lot of pressure is on the walls of the arteries
      • Veins
        • Carry blood to the heart
        • watch pocket valves to stop the blood flowing the wrong way
        • Little pressure on the walls
        • Allow it to pass easily
      • Capillaries
        • Carry blood to organs and other tissues
        • must be small enough to go between cells


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