Question

what feature of our body protects us from catching infectious diseases ?

Answer 1

immunity of our body protect us from getting infectious diseases
and and also WBC

Answer 2

Hey ...here is your answer

The main feartures that protect our body from.infectious diseases

---> The presence of skin - that almost prevent the entry of microorganism
---> the mucous membrane that trap the microbes and kill them
---> the presence of first line and second line defense in our body
The first line defense - it is non self defence mechanism .it includes skin,mucous membrane ,cilia,nasal hair etc ....
The second line defense - it includes NKcell ,macrophages ,neutrophils etc ....
===> when microbes passes through or escaped from first line defense then our second line defense activates
===> then second line defense mostly kills
If it escape from second line also then the third line defense activates which include T cell and B cells
==> so the macrophages that engulf the microorganism that represnt out of ots body through antigen representing centres present on macrophages .neutrophils etc.. So that activates T-h cells and T-h cell activates B cell to produce antibodies and kill it

Hope you got