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  •  The Cut
  • Ow I hurtMy Knee, and there is a cut
  • The Blood Clot
  • I have got no plaster, how will It heal now?
  • The Cure
  • What is going to happen now the micro-organisms are in my body
  • When I cut myself platelet blood comes to the rescue to try and stop all of the bleeding, however many micro-organisms still get in and these need to be sorted out to make sure that there is no infection.
  • Releasing Antibodies
  • As broken cells are detected, a network of fibres will trap the blood cells which will form the clot, this will then stop the blood from leaving the body, this is a physical barrier. Without many other defences that prevent things from getting in pathogens can get in with are diseases, like bacteria. The way that these are stopped from entering the body is that Skin, Mucus Membrane and phagocytes prevent it.
  • The Phagocytes 
  • Bacteria will produce an antitoxin to stop the toxins from doing anything harmful, they neutralise the microbe. this happens on a large scale so it reduces the effects of an infection that could be in there.
  • The Microbes Have gone
  • Is everything ok now ?
  • The white blood cell will now release a lymphocyte. This lymphocyte will then release many antibodies to the place where there are harmful micro-organisms, these antibodies are shaped exactly the same way that the microbe is shaped, so that the antibody can latch on to the microbe, lots more antibodies will then be made, to stop it doing any harm, it will stay there until something else comes to kill it.
  • When the antibody is attached to the microbe a phagocyte will recognise the pathogen after it has been stopped by the antibody, they then come and Destry the microbe. When they engulf the bacteria it is known as phagocytosis, it is either taken into the cytoplasm, or it is excreted in the phagocytes waste. Phagocytes are known as pacmen as they kill everything.
  • Now that the Micro-organisms have been killed in the body from all of the defences you will have a scab on your knee, however there is now no chance if you getting a disease as all the microbes have been cleared out of the body. Everything has got back to normal now.
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