The Circulatory System - Blood Vessels 

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  • Created by: alexda
  • Created on: 31-01-15 20:51
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  • The Circulatory System - Blood Vessels
    • Arteries
      • Arteries transport deoxygenated blood away from the heart to the lungs.
      • Blood is carried under very high pressure so:
    • Capillaries
      • Capillaries are involved in the exchange of materials with the tissues.
        • Oxygen passes through the capillary wall and into the tissues, carbon dioxide passes from the tissues into the blood
      • Permeable walls so substances can diffuse in and out.
      • Very narrow diameter
    • Veins
      • Veins transport oxygenated blood to the heart from the lungs.
      • Blood is carried under low pressure so:
    • Arteries branch into capillaries. Capillaries eventually join up to form veins.


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