66802
Descrição
Mapa Mental por gschristie95, atualizado more than 1 year ago
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Criado por gschristie95
quase 11 anos atrás
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Primary Defences
- Examples
- Skin
- a physical barrier
- also a chemical barrier
- sebaceous glands produce oily sebum which waterproofs and has an
antibacterial chemical with a low pH to inhibit microbial growth
- sebaceous glands produce oily sebum which waterproofs and has an
antibacterial chemical with a low pH to inhibit microbial growth
- can be penetrated by cuts, insect bites and natural boday openings
- a physical barrier
- Mucus membranes
- these protect body openings eg. mouth, ears, nostrils and genitals
- most of them secrete mucus to trap pathogens
- the mucus usually contains an antibacterial chemical to
slow the muliplication of the bug
- the mucus usually contains an antibacterial chemical to
slow the muliplication of the bug
- these protect body openings eg. mouth, ears, nostrils and genitals
- Tears
- Blood clotting
- Skin
- their function is to stop the entry of parasites and pathogens
- block a huge number of microbes daily
- if the primary defences are penetrated, the first
response of the body is phagocytosis
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