● Innate immunity is `color{Violet}"non-specific type"` of defence, that is present at the `color{Violet}"time of birth"`.
● This is accomplished by providing `color{Violet}"different types of barriers"` to the entry of the foreign agents into our body.
Innate immunity consist of `color{Violet}"four types"` of barriers. These are —
● `color{Brown} "Physical barriers"` :
`star` `color{Violet}"Skin"` on our body is the main barrier which `color{Violet}"prevents entry"` of the micro-organisms.
`star` `color{Violet}"Mucus coating"` of the epithelium lining the `color{Violet}"respiratory, gastrointestinal"` and `color{Violet}"urogenital tracts"` also help in trapping microbes entering our body.
● `color{Brown}"Physiological barriers"` : All prevent microbial growth.
`star` `color{Violet}"Acid"` in the stomach
`star` `color{Violet}"Saliva"` in the mouth
`star` `color{Violet}"Tears"` from eyes
● `color{Brown}"Cellular barriers"` : Certain types of `color{Violet}"leukocytes (WBC)"` of our body like `color{Violet}"polymorpho-nuclear leukocytes"` (`color{Violet}"PMNL-neutrophils"`) and `color{Violet}"monocytes"` and `color{Violet}"natural killer"` (type of lymphocytes) in the blood as well as `color{Violet}"macrophages"` in tissues can phagocytose and destroy microbes.
● `color{Brown}"Cytokine barriers"` : `color{Violet}"Virus-infected cells"` secrete proteins called `color{Violet}"interferons"` which protect non-infected cells from further viral infection.
● Innate immunity is `color{Violet}"non-specific type"` of defence, that is present at the `color{Violet}"time of birth"`.
● This is accomplished by providing `color{Violet}"different types of barriers"` to the entry of the foreign agents into our body.
Innate immunity consist of `color{Violet}"four types"` of barriers. These are —
● `color{Brown} "Physical barriers"` :
`star` `color{Violet}"Skin"` on our body is the main barrier which `color{Violet}"prevents entry"` of the micro-organisms.
`star` `color{Violet}"Mucus coating"` of the epithelium lining the `color{Violet}"respiratory, gastrointestinal"` and `color{Violet}"urogenital tracts"` also help in trapping microbes entering our body.
● `color{Brown}"Physiological barriers"` : All prevent microbial growth.
`star` `color{Violet}"Acid"` in the stomach
`star` `color{Violet}"Saliva"` in the mouth
`star` `color{Violet}"Tears"` from eyes
● `color{Brown}"Cellular barriers"` : Certain types of `color{Violet}"leukocytes (WBC)"` of our body like `color{Violet}"polymorpho-nuclear leukocytes"` (`color{Violet}"PMNL-neutrophils"`) and `color{Violet}"monocytes"` and `color{Violet}"natural killer"` (type of lymphocytes) in the blood as well as `color{Violet}"macrophages"` in tissues can phagocytose and destroy microbes.
● `color{Brown}"Cytokine barriers"` : `color{Violet}"Virus-infected cells"` secrete proteins called `color{Violet}"interferons"` which protect non-infected cells from further viral infection.