| Front | non specific defences (keep em out) 4.1.1(d) |
|---|---|
| Back | non specific defences (keep em out) - skin prevents entry of pathogens, has a skin flora of healthy microorganisms (outcompete with pathogens for space) and produces sebum (oily subtance inhibiting growth of pathogens) - body tracts lined with mucuous membranes (secrete mucus), trapping microorganisms and its lysozymes destroy bacterial/fungal cell walls, its phagocytesremove remaining pathogens - lysozymes in tears/urine and acid in stomach prevent entering body - expulsive reflexes (coughs, sneeze, both eject pathogen laden mucus in gas exchange system and vommiting and diorrhoea which expel contents of gut with pathogens) |
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