Natural defences revision

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  • Created by: Charlotte
  • Created on: 22-04-13 07:44
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  • Natural defences
    • When you contract a virus, your number of antibodies will increase so that you can fight the virus. If you catch the virus for a second time, your body already knows how to fight it, so therefore you will recover quicker.
    • As you begin to feel better again, your number of antibodies will begin to decrease.
    • If we have a cut, our defence system will grow a scab over it to protect it and help it to heal.
    • Our eyelashes protect or eyes when we blink and help to filter out any dust or dirt from entering our eyes.
    • A virus needs a host. It invades and takes over a cell and then begins to multiply, producing more virus particles.
    • Antibodies are produced to fight the illness.

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