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Powerpoint respiratory system

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Powerpoint respiratory system

  1. 1. BREATHING<br />
  2. 2. Features of gas exchangesurfaces in animals<br />Thin:toallow gases todiffuseacrossthemquickly.<br />Closetoanefficienttransportsystem: totake gases to and fromtheexchangesurface.<br />Moist: tostop thecellsdying.<br />Largesurfacearea: so that a lot of gas can diffuseacross at thesame time.<br />Wellventilated: a goodsupply of oxygenoftenbroughtbybreathingmovements.<br />
  3. 3. RESPIRATORY SYSTEM<br />
  4. 4. Ciliated and gobletcells<br />Gobletcells: produces mucus and releasesitontothesurface of thecells.<br />Cilia: They can beat in a coordinatedwaytocarry mucus (withtrapped bacteria and dust) awayfromtheungssurfaces.<br />
  5. 5. BREATHING<br />
  6. 6. GAS EXCHANGE<br />

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