3.5- Non-Specific Body Defences
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| What kind of cells form a physical barrier? | show 🗑
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| show | the skin and inner linings of the digestive and
respiratory systems.
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| show | Secretions include tears, saliva, mucus and
stomach acid.
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| What is a pathogen? | show 🗑
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| show | The Inflammatory Response.
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| What releases histamine? | show 🗑
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| show | causes vasodilation and increased capillary permeability.
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| show | an accumulation of phagocytes and clotting elements at the site of infection.
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| show | Phagocytes recognise pathogens and destroy them by phagocytosis.
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| What is phagocytosis? | show 🗑
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| show | Phagocytes release cytokines
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| show | Cytokines are protein molecules that act as a signal to specific white blood cells causing them to accumulate at the site of infection.
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| show | attract more phagocytes to the site of infection
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