Gas Exchange

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  • Gas Exchange
    • Takes Oxygen out of the lungs
      • Oxygen- O2
    • Takes Carbon Dioxide into the lungs
      • Carbon Dioxide- CO2
    • The alveoli are adapted to absorb as much gas in the exchange is possible
      • Give the lungs a large surface area
      • Thin walls (one cell thick)
      • A lot of cappillaries
    • Exchanged through diffusion
      • Some water vapour is also taken from the surface of the alveoli- we see this on cold days when we breathe out


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