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Many microbial pathogens enter the gut of humans along with food. What are the preventive barriers to protect the body from such pathogens?

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asked Dec 6, 2017 in Biology by sforrest072 (157,439 points) ● 63 ● 448 ● 1274

Many microbial pathogens enter the gut of humans along with food.
What are the preventive barriers to protect the body from such pathogens? 

What type of immunity do you observe in this case?

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answered Dec 6, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 22
selected Feb 24, 2018 by sarthaks
 
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(i) The mucus coating of the epithelium lining of the gut helps in trapping microbes entering the body.
(ii) Saliva in the mouth and hydrochloric acid in gastric juice secreted by stomach prevent microbial growth. This type of immunity is innate immunity.

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