Immunity 0.0 / 5 ? BiologyHealth, illness and diseaseA2/A-levelCCEA Created by: Football03Created on: 22-02-22 21:28 Name 4 microorganisms? -Viruses -Bacteria -Fungi -Protocists 1 of 9 What does a microorganism have to be to be 'pathogenic'? -Enter the host -Colonise tissues of host -Evade the host's tissues -Damage the host tissues 2 of 9 What is an epidemic? A disease spread through a population 3 of 9 What is a pandemic? A disease spread worldwide 4 of 9 What are the 3 lines of defence? -Physical barriers to entry -Phagocytosis -Specific immune response 5 of 9 Name the 4 physical barriers to pathogen entry? -Skin -Tears&Saliva(enzyme lysozyme) -Mucus(secreted by goblet cells) -Hydrochloric acid(secreted in stomach) 6 of 9 How can pathogens still enter the body? Through broken skin(cut) or in the lungs/intestines 7 of 9 How does an inflammatory response occur? -Capillaries become leaky -Plasma escapes -Area becomes swollen -Phagocytic white blood cells readily squeeze through the leaky capillary walls 8 of 9 What are the 2 phagocytes? Polymorphs & Macrophages 9 of 9
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