Revision- process of infection 0.0 / 5 ? NursingAnatomy and PhysiologyUniversityNone Created by: mollyt2554Created on: 19-10-22 17:43 What is the first step in the process of infection? colonisation 1 of 13 where do infectious micro-organisms exist and give 2 examples of these? reservoirs; contaminated water or animals 2 of 13 What are the 3 ways infectious micro-organisms are transmitted? Direct contact Indirectly- through vectors Direct exposure 3 of 13 How do infectious micro-organisms travel from human to human? aerosolised micro-organisms transmitted through droplets (coughing and sneezing) and physical contact 4 of 13 what do micro-organisms do after they have deposited into receptive environment? they stabilise adherence to tissue through specific surface receptors 5 of 13 what is the second stage of the infection process? Invasion 6 of 13 what mechanisms do the micro-organisms develop during invasion? develop mechanisms to penetrate tissue and avoid host's specific and non specific defences 7 of 13 what is the third step of the infection process? Multiplication 8 of 13 what type of environment is created during multiplication? warm, nutrient filled 9 of 13 what happens during multiplication? replicate within infected cells (viral pathogens); replicate in macrophages & other cells (bacterial pathogens) 10 of 13 what is the 4th stage of the infection process? spread 11 of 13 what happens if host has intact immune system? micro-organism remains localised 12 of 13 what happens if host has immune or inflammatory system compromised? infection may rapidly spread 13 of 13
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